netdev - Re: [PATCH RFC net-next 02/12] net: dsa: support use of phylink_generic

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Date:   Wed, 24 Nov 2021 18:13:45 +0000
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
CC:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        George McCollister <george.mccollister@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Woojung Huh <woojung.huh@...rochip.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "UNGLinuxDriver@...rochip.com" <UNGLinuxDriver@...rochip.com>
Subject: Re: [PATCH RFC net-next 02/12] net: dsa: support use of
 phylink_generic_validate()

On Wed, Nov 24, 2021 at 05:52:33PM +0000, Russell King (Oracle) wrote:
> Support the use of phylink_generic_validate() when there is no
> phylink_validate method given in the DSA switch operations and
> mac_capabilities have been set in the phylink_config structure by the
> DSA switch driver.
> 
> This gives DSA switch drivers the option to use this if they provide
> the supported_interfaces and mac_capabilities, while still giving them
> an option to override the default implementation if necessary.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> ---

Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>

>  net/dsa/port.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/net/dsa/port.c b/net/dsa/port.c
> index eaa66114924b..d928be884f01 100644
> --- a/net/dsa/port.c
> +++ b/net/dsa/port.c
> @@ -981,8 +981,11 @@ static void dsa_port_phylink_validate(struct phylink_config *config,
>  	struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
>  	struct dsa_switch *ds = dp->ds;
>  
> -	if (!ds->ops->phylink_validate)
> +	if (!ds->ops->phylink_validate) {
> +		if (config->mac_capabilities)
> +			phylink_generic_validate(config, supported, state);
>  		return;
> +	}
>  
>  	ds->ops->phylink_validate(ds, dp->index, supported, state);
>  }
> -- 
> 2.30.2
>