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Date:   Tue, 19 Jul 2022 02:57:18 +0200
From:   Christian Marangi <ansuelsmth@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        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>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jens Axboe <axboe@...nel.dk>,
        Christian Marangi <ansuelsmth@...il.com>,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [net-next PATCH v2 07/15] net: dsa: qca8k: move bridge functions to common code

The same bridge functions are used by drivers based on qca8k family
switch. Move them to common code to make them accessible also by other
drivers.

Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 drivers/net/dsa/qca/qca8k-8xxx.c   | 93 -----------------------------
 drivers/net/dsa/qca/qca8k-common.c | 94 ++++++++++++++++++++++++++++++
 drivers/net/dsa/qca/qca8k.h        |  9 +++
 3 files changed, 103 insertions(+), 93 deletions(-)

diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c
index 23b4cd6b68ff..729f63a865d1 100644
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -1575,99 +1575,6 @@ qca8k_get_ethtool_stats_eth(struct dsa_switch *ds, int port, u64 *data)
 	return ret;
 }
 
-static void
-qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
-{
-	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
-	u32 stp_state;
-
-	switch (state) {
-	case BR_STATE_DISABLED:
-		stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED;
-		break;
-	case BR_STATE_BLOCKING:
-		stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING;
-		break;
-	case BR_STATE_LISTENING:
-		stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING;
-		break;
-	case BR_STATE_LEARNING:
-		stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING;
-		break;
-	case BR_STATE_FORWARDING:
-	default:
-		stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD;
-		break;
-	}
-
-	qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
-		  QCA8K_PORT_LOOKUP_STATE_MASK, stp_state);
-}
-
-static int qca8k_port_bridge_join(struct dsa_switch *ds, int port,
-				  struct dsa_bridge bridge,
-				  bool *tx_fwd_offload,
-				  struct netlink_ext_ack *extack)
-{
-	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
-	int port_mask, cpu_port;
-	int i, ret;
-
-	cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
-	port_mask = BIT(cpu_port);
-
-	for (i = 0; i < QCA8K_NUM_PORTS; i++) {
-		if (dsa_is_cpu_port(ds, i))
-			continue;
-		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
-			continue;
-		/* Add this port to the portvlan mask of the other ports
-		 * in the bridge
-		 */
-		ret = regmap_set_bits(priv->regmap,
-				      QCA8K_PORT_LOOKUP_CTRL(i),
-				      BIT(port));
-		if (ret)
-			return ret;
-		if (i != port)
-			port_mask |= BIT(i);
-	}
-
-	/* Add all other ports to this ports portvlan mask */
-	ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
-			QCA8K_PORT_LOOKUP_MEMBER, port_mask);
-
-	return ret;
-}
-
-static void qca8k_port_bridge_leave(struct dsa_switch *ds, int port,
-				    struct dsa_bridge bridge)
-{
-	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
-	int cpu_port, i;
-
-	cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
-
-	for (i = 0; i < QCA8K_NUM_PORTS; i++) {
-		if (dsa_is_cpu_port(ds, i))
-			continue;
-		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
-			continue;
-		/* Remove this port to the portvlan mask of the other ports
-		 * in the bridge
-		 */
-		regmap_clear_bits(priv->regmap,
-				  QCA8K_PORT_LOOKUP_CTRL(i),
-				  BIT(port));
-	}
-
-	/* Set the cpu port to be the only one in the portvlan mask of
-	 * this port
-	 */
-	qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
-		  QCA8K_PORT_LOOKUP_MEMBER, BIT(cpu_port));
-}
-
 static void
 qca8k_port_fast_age(struct dsa_switch *ds, int port)
 {
diff --git a/drivers/net/dsa/qca/qca8k-common.c b/drivers/net/dsa/qca/qca8k-common.c
index 466ea9f9470b..129a82172945 100644
--- a/drivers/net/dsa/qca/qca8k-common.c
+++ b/drivers/net/dsa/qca/qca8k-common.c
@@ -9,6 +9,7 @@
 #include <linux/netdevice.h>
 #include <net/dsa.h>
 #include <linux/of_platform.h>
+#include <linux/if_bridge.h>
 
 #include "qca8k.h"
 
@@ -621,3 +622,96 @@ qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)
 	/* Nothing to do on the port's MAC */
 	return 0;
 }
+
+void
+qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state)
+{
+	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
+	u32 stp_state;
+
+	switch (state) {
+	case BR_STATE_DISABLED:
+		stp_state = QCA8K_PORT_LOOKUP_STATE_DISABLED;
+		break;
+	case BR_STATE_BLOCKING:
+		stp_state = QCA8K_PORT_LOOKUP_STATE_BLOCKING;
+		break;
+	case BR_STATE_LISTENING:
+		stp_state = QCA8K_PORT_LOOKUP_STATE_LISTENING;
+		break;
+	case BR_STATE_LEARNING:
+		stp_state = QCA8K_PORT_LOOKUP_STATE_LEARNING;
+		break;
+	case BR_STATE_FORWARDING:
+	default:
+		stp_state = QCA8K_PORT_LOOKUP_STATE_FORWARD;
+		break;
+	}
+
+	qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
+		  QCA8K_PORT_LOOKUP_STATE_MASK, stp_state);
+}
+
+int qca8k_port_bridge_join(struct dsa_switch *ds, int port,
+			   struct dsa_bridge bridge,
+			   bool *tx_fwd_offload,
+			   struct netlink_ext_ack *extack)
+{
+	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
+	int port_mask, cpu_port;
+	int i, ret;
+
+	cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
+	port_mask = BIT(cpu_port);
+
+	for (i = 0; i < QCA8K_NUM_PORTS; i++) {
+		if (dsa_is_cpu_port(ds, i))
+			continue;
+		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
+			continue;
+		/* Add this port to the portvlan mask of the other ports
+		 * in the bridge
+		 */
+		ret = regmap_set_bits(priv->regmap,
+				      QCA8K_PORT_LOOKUP_CTRL(i),
+				      BIT(port));
+		if (ret)
+			return ret;
+		if (i != port)
+			port_mask |= BIT(i);
+	}
+
+	/* Add all other ports to this ports portvlan mask */
+	ret = qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
+			QCA8K_PORT_LOOKUP_MEMBER, port_mask);
+
+	return ret;
+}
+
+void qca8k_port_bridge_leave(struct dsa_switch *ds, int port,
+			     struct dsa_bridge bridge)
+{
+	struct qca8k_priv *priv = (struct qca8k_priv *)ds->priv;
+	int cpu_port, i;
+
+	cpu_port = dsa_to_port(ds, port)->cpu_dp->index;
+
+	for (i = 0; i < QCA8K_NUM_PORTS; i++) {
+		if (dsa_is_cpu_port(ds, i))
+			continue;
+		if (!dsa_port_offloads_bridge(dsa_to_port(ds, i), &bridge))
+			continue;
+		/* Remove this port to the portvlan mask of the other ports
+		 * in the bridge
+		 */
+		regmap_clear_bits(priv->regmap,
+				  QCA8K_PORT_LOOKUP_CTRL(i),
+				  BIT(port));
+	}
+
+	/* Set the cpu port to be the only one in the portvlan mask of
+	 * this port
+	 */
+	qca8k_rmw(priv, QCA8K_PORT_LOOKUP_CTRL(port),
+		  QCA8K_PORT_LOOKUP_MEMBER, BIT(cpu_port));
+}
diff --git a/drivers/net/dsa/qca/qca8k.h b/drivers/net/dsa/qca/qca8k.h
index c842564eb61b..dd3072e2f23c 100644
--- a/drivers/net/dsa/qca/qca8k.h
+++ b/drivers/net/dsa/qca/qca8k.h
@@ -460,4 +460,13 @@ int qca8k_get_sset_count(struct dsa_switch *ds, int port, int sset);
 int qca8k_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *eee);
 int qca8k_get_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e);
 
+/* Common bridge function */
+void qca8k_port_stp_state_set(struct dsa_switch *ds, int port, u8 state);
+int qca8k_port_bridge_join(struct dsa_switch *ds, int port,
+			   struct dsa_bridge bridge,
+			   bool *tx_fwd_offload,
+			   struct netlink_ext_ack *extack);
+void qca8k_port_bridge_leave(struct dsa_switch *ds, int port,
+			     struct dsa_bridge bridge);
+
 #endif /* __QCA8K_H */
-- 
2.36.1

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