netdev - Re: [PATCH 1/1] net: fec: report correct hardware stamping info to ethtool

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Date:	Sun, 6 Jan 2013 12:33:50 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Frank Li <Frank.Li@...escale.com>
Cc:	lznuaa@...il.com, shawn.guo@...aro.org, richardcochran@...il.com,
	davem@...emloft.net, linux-arm-kernel@...ts.infradead.or,
	netdev@...r.kernel.org
Subject: Re: [PATCH 1/1] net: fec: report correct hardware stamping info to
 ethtool

On Sun, Jan 06, 2013 at 09:38:38AM +0800, Frank Li wrote:
> Report correct hardware stamping capibilty by ethtool interface.

s/capibilty/capability/

> The v1.0 ptp4l check it.
> 
> Signed-off-by: Frank Li <Frank.Li@...escale.com>
> ---
>  drivers/net/ethernet/freescale/fec.c |   28 +++++++++++++++++++++++++++-
>  1 files changed, 27 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
> index a379319..c713db5 100644
> --- a/drivers/net/ethernet/freescale/fec.c
> +++ b/drivers/net/ethernet/freescale/fec.c
> @@ -1173,12 +1173,38 @@ static void fec_enet_get_drvinfo(struct net_device *ndev,
>  	strcpy(info->bus_info, dev_name(&ndev->dev));
>  }
>  
> +static int fec_enet_get_ts_info(struct net_device *ndev,
> +				struct ethtool_ts_info *info)
> +{
> +	struct fec_enet_private *fep = netdev_priv(ndev);
> +	int ret;
> +	ret = ethtool_op_get_ts_info(ndev, info);
> +
> +	if (fep->bufdesc_ex) {
> +
> +		info->so_timestamping |= SOF_TIMESTAMPING_TX_HARDWARE |
> +					 SOF_TIMESTAMPING_RX_HARDWARE |
> +					 SOF_TIMESTAMPING_RAW_HARDWARE;
> +		if (fep->ptp_clock)
> +			info->phc_index = ptp_clock_index(fep->ptp_clock);
> +		else
> +			info->phc_index = -1;
> +
> +		info->tx_types = (1 << HWTSTAMP_TX_OFF) |
> +				 (1 << HWTSTAMP_TX_ON);
> +
> +		info->rx_filters = (1 << HWTSTAMP_FILTER_NONE) |
> +				   (1 << HWTSTAMP_FILTER_ALL);

		return 0;
	} else {
		return ethtool_op_get_ts_info(ndev, info);
	}

?

Otherwise you call ethtool_op_get_ts_info() and don't use the result
with fep->bufdesc_ex, still you return the return value of
ethtool_op_get_ts_info().

Sascha


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