Subject: Re: [PATCH net-next 4/6] net: ravb: convert to ndo_hwtstamp API

From: Niklas Söderlund <[email-masked]>
Date: Thu, 16 Oct 2025 20:17:37 +0200

Hi Vadim,

Thanks for your work.

On 2025-10-16 18:07:25 +0000, Vadim Fedorenko wrote:
> Convert driver to use .ndo_hwtstamp_set()/.ndo_hwtstamp_get callbacks.
> ravb_do_ioctl() becomes pure phy_do_ioctl_running(), remove it and
> replace in callbacks.
> 
> Signed-off-by: Vadim Fedorenko <[email-masked]>

Reviewed-by: Niklas Söderlund <[email-masked]>

> ---
>  drivers/net/ethernet/renesas/ravb_main.c | 61 ++++++++----------------
>  1 file changed, 19 insertions(+), 42 deletions(-)
> 
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index 9d3bd65b85ff..113d7c7bd921 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
> @@ -2390,41 +2390,38 @@ static int ravb_close(struct net_device *ndev)
>  	return 0;
>  }
>  
> -static int ravb_hwtstamp_get(struct net_device *ndev, struct ifreq *req)
> +static int ravb_hwtstamp_get(struct net_device *ndev,
> +			     struct kernel_hwtstamp_config *config)
>  {
>  	struct ravb_private *priv = netdev_priv(ndev);
> -	struct hwtstamp_config config;
>  
> -	config.flags = 0;
> -	config.tx_type = priv->tstamp_tx_ctrl ? HWTSTAMP_TX_ON :
> -						HWTSTAMP_TX_OFF;
> +	config->flags = 0;
> +	config->tx_type = priv->tstamp_tx_ctrl ? HWTSTAMP_TX_ON :
> +						 HWTSTAMP_TX_OFF;
>  	switch (priv->tstamp_rx_ctrl & RAVB_RXTSTAMP_TYPE) {
>  	case RAVB_RXTSTAMP_TYPE_V2_L2_EVENT:
> -		config.rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
> +		config->rx_filter = HWTSTAMP_FILTER_PTP_V2_L2_EVENT;
>  		break;
>  	case RAVB_RXTSTAMP_TYPE_ALL:
> -		config.rx_filter = HWTSTAMP_FILTER_ALL;
> +		config->rx_filter = HWTSTAMP_FILTER_ALL;
>  		break;
>  	default:
> -		config.rx_filter = HWTSTAMP_FILTER_NONE;
> +		config->rx_filter = HWTSTAMP_FILTER_NONE;
>  	}
>  
> -	return copy_to_user(req->ifr_data, &config, sizeof(config)) ?
> -		-EFAULT : 0;
> +	return 0;
>  }
>  
>  /* Control hardware time stamping */
> -static int ravb_hwtstamp_set(struct net_device *ndev, struct ifreq *req)
> +static int ravb_hwtstamp_set(struct net_device *ndev,
> +			     struct kernel_hwtstamp_config *config,
> +			     struct netlink_ext_ack *extack)
>  {
>  	struct ravb_private *priv = netdev_priv(ndev);
> -	struct hwtstamp_config config;
>  	u32 tstamp_rx_ctrl = RAVB_RXTSTAMP_ENABLED;
>  	u32 tstamp_tx_ctrl;
>  
> -	if (copy_from_user(&config, req->ifr_data, sizeof(config)))
> -		return -EFAULT;
> -
> -	switch (config.tx_type) {
> +	switch (config->tx_type) {
>  	case HWTSTAMP_TX_OFF:
>  		tstamp_tx_ctrl = 0;
>  		break;
> @@ -2435,7 +2432,7 @@ static int ravb_hwtstamp_set(struct net_device *ndev, struct ifreq *req)
>  		return -ERANGE;
>  	}
>  
> -	switch (config.rx_filter) {
> +	switch (config->rx_filter) {
>  	case HWTSTAMP_FILTER_NONE:
>  		tstamp_rx_ctrl = 0;
>  		break;
> @@ -2443,36 +2440,14 @@ static int ravb_hwtstamp_set(struct net_device *ndev, struct ifreq *req)
>  		tstamp_rx_ctrl |= RAVB_RXTSTAMP_TYPE_V2_L2_EVENT;
>  		break;
>  	default:
> -		config.rx_filter = HWTSTAMP_FILTER_ALL;
> +		config->rx_filter = HWTSTAMP_FILTER_ALL;
>  		tstamp_rx_ctrl |= RAVB_RXTSTAMP_TYPE_ALL;
>  	}
>  
>  	priv->tstamp_tx_ctrl = tstamp_tx_ctrl;
>  	priv->tstamp_rx_ctrl = tstamp_rx_ctrl;
>  
> -	return copy_to_user(req->ifr_data, &config, sizeof(config)) ?
> -		-EFAULT : 0;
> -}
> -
> -/* ioctl to device function */
> -static int ravb_do_ioctl(struct net_device *ndev, struct ifreq *req, int cmd)
> -{
> -	struct phy_device *phydev = ndev->phydev;
> -
> -	if (!netif_running(ndev))
> -		return -EINVAL;
> -
> -	if (!phydev)
> -		return -ENODEV;
> -
> -	switch (cmd) {
> -	case SIOCGHWTSTAMP:
> -		return ravb_hwtstamp_get(ndev, req);
> -	case SIOCSHWTSTAMP:
> -		return ravb_hwtstamp_set(ndev, req);
> -	}
> -
> -	return phy_mii_ioctl(phydev, req, cmd);
> +	return 0;
>  }
>  
>  static int ravb_change_mtu(struct net_device *ndev, int new_mtu)
> @@ -2608,11 +2583,13 @@ static const struct net_device_ops ravb_netdev_ops = {
>  	.ndo_get_stats		= ravb_get_stats,
>  	.ndo_set_rx_mode	= ravb_set_rx_mode,
>  	.ndo_tx_timeout		= ravb_tx_timeout,
> -	.ndo_eth_ioctl		= ravb_do_ioctl,
> +	.ndo_eth_ioctl		= phy_do_ioctl_running,
>  	.ndo_change_mtu		= ravb_change_mtu,
>  	.ndo_validate_addr	= eth_validate_addr,
>  	.ndo_set_mac_address	= eth_mac_addr,
>  	.ndo_set_features	= ravb_set_features,
> +	.ndo_hwtstamp_get	= ravb_hwtstamp_get,
> +	.ndo_hwtstamp_set	= ravb_hwtstamp_set,
>  };
>  
>  /* MDIO bus init function */
> -- 
> 2.47.3
> 

-- 
Kind Regards,
Niklas Söderlund