netdev - Re: [PATCH net-next v3 5/5] net: ethernet: cortina: Implement .set

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Message-ID: <9d7d7e8b-8838-410b-a694-2f2da21602c1@lunn.ch>
Date: Mon, 13 May 2024 19:22:08 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Linus Walleij <linus.walleij@...aro.org>
Cc: Hans Ulli Kroll <ulli.kroll@...glemail.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH net-next v3 5/5] net: ethernet: cortina: Implement
 .set_pauseparam()

On Mon, May 13, 2024 at 03:38:52PM +0200, Linus Walleij wrote:
> The Cortina Gemini ethernet can very well set up TX or RX
> pausing, so add this functionality to the driver in a
> .set_pauseparam() callback.
> 
> Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
> ---
>  drivers/net/ethernet/cortina/gemini.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c
> index 85a9777083ba..4ae25a064407 100644
> --- a/drivers/net/ethernet/cortina/gemini.c
> +++ b/drivers/net/ethernet/cortina/gemini.c
> @@ -2146,6 +2146,20 @@ static void gmac_get_pauseparam(struct net_device *netdev,
>  	pparam->autoneg = true;
>  }
>  
> +static int gmac_set_pauseparam(struct net_device *netdev,
> +			       struct ethtool_pauseparam *pparam)
> +{
> +	struct phy_device *phydev = netdev->phydev;
> +
> +	if (!pparam->autoneg)
> +		return -EOPNOTSUPP;
> +
> +	gmac_set_flow_control(netdev, pparam->tx_pause, pparam->rx_pause);

It is not obvious to my why you need this call here?

	Andrew