linux-kernel - [PATCH RFC net-next 02/23] net: dsa: lantiq_gswip: deduplicate dsa_switch

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Message-ID: <aKDhMZgsq9UblP4j@pidgin.makrotopia.org>
Date: Sat, 16 Aug 2025 20:51:13 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Hauke Mehrtens <hauke@...ke-m.de>, Simon Horman <horms@...nel.org>,
	Russell King <linux@...linux.org.uk>,
	Florian Fainelli <f.fainelli@...il.com>,
	Arkadi Sharshevsky <arkadis@...lanox.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Cc: Andreas Schirm <andreas.schirm@...mens.com>,
	Lukas Stockmann <lukas.stockmann@...mens.com>,
	Alexander Sverdlin <alexander.sverdlin@...mens.com>,
	Peter Christen <peter.christen@...mens.com>,
	Avinash Jayaraman <ajayaraman@...linear.com>,
	Bing tao Xu <bxu@...linear.com>, Liang Xu <lxu@...linear.com>,
	Juraj Povazanec <jpovazanec@...linear.com>,
	"Fanni (Fang-Yi) Chan" <fchan@...linear.com>,
	"Benny (Ying-Tsan) Weng" <yweng@...linear.com>,
	"Livia M. Rosu" <lrosu@...linear.com>,
	John Crispin <john@...ozen.org>
Subject: [PATCH RFC net-next 02/23] net: dsa: lantiq_gswip: deduplicate
 dsa_switch_ops

The two instances of struct dsa_switch_ops differ only by their
.phylink_get_caps op. Instead of having two instances of dsa_switch_ops,
rather just have a pointer to the phylink_get_caps function in
struct gswip_hw_info.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 drivers/net/dsa/lantiq_gswip.c | 44 ++++++++++++----------------------
 1 file changed, 15 insertions(+), 29 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswip.c
index fed86b2d78fc..eb38caaa46af 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -257,7 +257,8 @@
 struct gswip_hw_info {
 	int max_ports;
 	int cpu_port;
-	const struct dsa_switch_ops *ops;
+	void (*phylink_get_caps)(struct dsa_switch *ds, int port,
+				 struct phylink_config *config);
 };
 
 struct xway_gphy_match_data {
@@ -1565,6 +1566,14 @@ static void gswip_xrx300_phylink_get_caps(struct dsa_switch *ds, int port,
 		MAC_10 | MAC_100 | MAC_1000;
 }
 
+static void gswip_phylink_get_caps(struct dsa_switch *ds, int port,
+				   struct phylink_config *config)
+{
+	struct gswip_priv *priv = ds->priv;
+
+	priv->hw_info->phylink_get_caps(ds, port, config);
+}
+
 static void gswip_port_set_link(struct gswip_priv *priv, int port, bool link)
 {
 	u32 mdio_phy;
@@ -1837,30 +1846,7 @@ static const struct phylink_mac_ops gswip_phylink_mac_ops = {
 	.mac_link_up	= gswip_phylink_mac_link_up,
 };
 
-static const struct dsa_switch_ops gswip_xrx200_switch_ops = {
-	.get_tag_protocol	= gswip_get_tag_protocol,
-	.setup			= gswip_setup,
-	.port_enable		= gswip_port_enable,
-	.port_disable		= gswip_port_disable,
-	.port_bridge_join	= gswip_port_bridge_join,
-	.port_bridge_leave	= gswip_port_bridge_leave,
-	.port_fast_age		= gswip_port_fast_age,
-	.port_vlan_filtering	= gswip_port_vlan_filtering,
-	.port_vlan_add		= gswip_port_vlan_add,
-	.port_vlan_del		= gswip_port_vlan_del,
-	.port_stp_state_set	= gswip_port_stp_state_set,
-	.port_fdb_add		= gswip_port_fdb_add,
-	.port_fdb_del		= gswip_port_fdb_del,
-	.port_fdb_dump		= gswip_port_fdb_dump,
-	.port_change_mtu	= gswip_port_change_mtu,
-	.port_max_mtu		= gswip_port_max_mtu,
-	.phylink_get_caps	= gswip_xrx200_phylink_get_caps,
-	.get_strings		= gswip_get_strings,
-	.get_ethtool_stats	= gswip_get_ethtool_stats,
-	.get_sset_count		= gswip_get_sset_count,
-};
-
-static const struct dsa_switch_ops gswip_xrx300_switch_ops = {
+static const struct dsa_switch_ops gswip_switch_ops = {
 	.get_tag_protocol	= gswip_get_tag_protocol,
 	.setup			= gswip_setup,
 	.port_enable		= gswip_port_enable,
@@ -1877,7 +1863,7 @@ static const struct dsa_switch_ops gswip_xrx300_switch_ops = {
 	.port_fdb_dump		= gswip_port_fdb_dump,
 	.port_change_mtu	= gswip_port_change_mtu,
 	.port_max_mtu		= gswip_port_max_mtu,
-	.phylink_get_caps	= gswip_xrx300_phylink_get_caps,
+	.phylink_get_caps	= gswip_phylink_get_caps,
 	.get_strings		= gswip_get_strings,
 	.get_ethtool_stats	= gswip_get_ethtool_stats,
 	.get_sset_count		= gswip_get_sset_count,
@@ -2140,7 +2126,7 @@ static int gswip_probe(struct platform_device *pdev)
 	priv->ds->dev = dev;
 	priv->ds->num_ports = priv->hw_info->max_ports;
 	priv->ds->priv = priv;
-	priv->ds->ops = priv->hw_info->ops;
+	priv->ds->ops = &gswip_switch_ops;
 	priv->ds->phylink_mac_ops = &gswip_phylink_mac_ops;
 	priv->dev = dev;
 	mutex_init(&priv->pce_table_lock);
@@ -2241,13 +2227,13 @@ static void gswip_shutdown(struct platform_device *pdev)
 static const struct gswip_hw_info gswip_xrx200 = {
 	.max_ports = 7,
 	.cpu_port = 6,
-	.ops = &gswip_xrx200_switch_ops,
+	.phylink_get_caps = gswip_xrx200_phylink_get_caps,
 };
 
 static const struct gswip_hw_info gswip_xrx300 = {
 	.max_ports = 7,
 	.cpu_port = 6,
-	.ops = &gswip_xrx300_switch_ops,
+	.phylink_get_caps = gswip_xrx300_phylink_get_caps,
 };
 
 static const struct of_device_id gswip_of_match[] = {
-- 
2.50.1