netdev - [PATCH net-next 3/5] net: dsa: support use of phylink_generic

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Message-Id: <E1ms2ta-00ECJH-6c@rmk-PC.armlinux.org.uk>
Date:   Tue, 30 Nov 2021 13:10:06 +0000
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     netdev@...r.kernel.org
Cc:     Andrew Lunn <andrew@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Jakub Kicinski <kuba@...nel.org>,
        Kurt Kanzenbach <kurt@...utronix.de>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH net-next 3/5] net: dsa: support use of
 phylink_generic_validate()

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.

Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 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 ef0acf005f8f..6d5ebe61280b 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