net: dsa: mt7530: support MDB and bridge flag operations

Support port MDB and bridge flag operations.

As the hardware can manage multicast forwarding itself, offload_fwd_mark
can be unconditionally set to true.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 120 insertions, 4 deletions

diff --git a/drivers/net/dsa/mt7530.c b/drivers/net/dsa/mt7530.c
index f06f5fa2f898..127856823a3b 100644
--- a/drivers/net/dsa/mt7530.c
+++ b/drivers/net/dsa/mt7530.c
@@ -999,8 +999,9 @@ mt753x_cpu_port_enable(struct dsa_switch *ds, int port)
 	mt7530_write(priv, MT7530_PVC_P(port),
 		     PORT_SPEC_TAG);
 
-	/* Unknown multicast frame forwarding to the cpu port */
-	mt7530_rmw(priv, MT7530_MFC, UNM_FFP_MASK, UNM_FFP(BIT(port)));
+	/* Disable flooding by default */
+	mt7530_rmw(priv, MT7530_MFC, BC_FFP_MASK | UNM_FFP_MASK | UNU_FFP_MASK,
+		   BC_FFP(BIT(port)) | UNM_FFP(BIT(port)) | UNU_FFP(BIT(port)));
 
 	/* Set CPU port number */
 	if (priv->id == ID_MT7621)
@@ -1138,6 +1139,56 @@ mt7530_stp_state_set(struct dsa_switch *ds, int port, u8 state)
 }
 
 static int
+mt7530_port_pre_bridge_flags(struct dsa_switch *ds, int port,
+			     struct switchdev_brport_flags flags,
+			     struct netlink_ext_ack *extack)
+{
+	if (flags.mask & ~(BR_LEARNING | BR_FLOOD | BR_MCAST_FLOOD |
+			   BR_BCAST_FLOOD))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int
+mt7530_port_bridge_flags(struct dsa_switch *ds, int port,
+			 struct switchdev_brport_flags flags,
+			 struct netlink_ext_ack *extack)
+{
+	struct mt7530_priv *priv = ds->priv;
+
+	if (flags.mask & BR_LEARNING)
+		mt7530_rmw(priv, MT7530_PSC_P(port), SA_DIS,
+			   flags.val & BR_LEARNING ? 0 : SA_DIS);
+
+	if (flags.mask & BR_FLOOD)
+		mt7530_rmw(priv, MT7530_MFC, UNU_FFP(BIT(port)),
+			   flags.val & BR_FLOOD ? UNU_FFP(BIT(port)) : 0);
+
+	if (flags.mask & BR_MCAST_FLOOD)
+		mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
+			   flags.val & BR_MCAST_FLOOD ? UNM_FFP(BIT(port)) : 0);
+
+	if (flags.mask & BR_BCAST_FLOOD)
+		mt7530_rmw(priv, MT7530_MFC, BC_FFP(BIT(port)),
+			   flags.val & BR_BCAST_FLOOD ? BC_FFP(BIT(port)) : 0);
+
+	return 0;
+}
+
+static int
+mt7530_port_set_mrouter(struct dsa_switch *ds, int port, bool mrouter,
+			struct netlink_ext_ack *extack)
+{
+	struct mt7530_priv *priv = ds->priv;
+
+	mt7530_rmw(priv, MT7530_MFC, UNM_FFP(BIT(port)),
+		   mrouter ? UNM_FFP(BIT(port)) : 0);
+
+	return 0;
+}
+
+static int
 mt7530_port_bridge_join(struct dsa_switch *ds, int port,
 			struct net_device *bridge)
 {
@@ -1349,6 +1400,59 @@ err:
 }
 
 static int
+mt7530_port_mdb_add(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb)
+{
+	struct mt7530_priv *priv = ds->priv;
+	const u8 *addr = mdb->addr;
+	u16 vid = mdb->vid;
+	u8 port_mask = 0;
+	int ret;
+
+	mutex_lock(&priv->reg_mutex);
+
+	mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+	if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+		port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+			    & PORT_MAP_MASK;
+
+	port_mask |= BIT(port);
+	mt7530_fdb_write(priv, vid, port_mask, addr, -1, STATIC_ENT);
+	ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+
+	mutex_unlock(&priv->reg_mutex);
+
+	return ret;
+}
+
+static int
+mt7530_port_mdb_del(struct dsa_switch *ds, int port,
+		    const struct switchdev_obj_port_mdb *mdb)
+{
+	struct mt7530_priv *priv = ds->priv;
+	const u8 *addr = mdb->addr;
+	u16 vid = mdb->vid;
+	u8 port_mask = 0;
+	int ret;
+
+	mutex_lock(&priv->reg_mutex);
+
+	mt7530_fdb_write(priv, vid, 0, addr, 0, STATIC_EMP);
+	if (!mt7530_fdb_cmd(priv, MT7530_FDB_READ, NULL))
+		port_mask = (mt7530_read(priv, MT7530_ATRD) >> PORT_MAP)
+			    & PORT_MAP_MASK;
+
+	port_mask &= ~BIT(port);
+	mt7530_fdb_write(priv, vid, port_mask, addr, -1,
+			 port_mask ? STATIC_ENT : STATIC_EMP);
+	ret = mt7530_fdb_cmd(priv, MT7530_FDB_WRITE, NULL);
+
+	mutex_unlock(&priv->reg_mutex);
+
+	return ret;
+}
+
+static int
 mt7530_vlan_cmd(struct mt7530_priv *priv, enum mt7530_vlan_cmd cmd, u16 vid)
 {
 	struct mt7530_dummy_poll p;
@@ -1820,9 +1924,12 @@ mt7530_setup(struct dsa_switch *ds)
 			ret = mt753x_cpu_port_enable(ds, i);
 			if (ret)
 				return ret;
-		} else
+		} else {
 			mt7530_port_disable(ds, i);
 
+			/* Disable learning by default on all user ports */
+			mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
+		}
 		/* Enable consistent egress tag */
 		mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
 			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
@@ -1984,9 +2091,13 @@ mt7531_setup(struct dsa_switch *ds)
 			ret = mt753x_cpu_port_enable(ds, i);
 			if (ret)
 				return ret;
-		} else
+		} else {
 			mt7530_port_disable(ds, i);
 
+			/* Disable learning by default on all user ports */
+			mt7530_set(priv, MT7530_PSC_P(i), SA_DIS);
+		}
+
 		/* Enable consistent egress tag */
 		mt7530_rmw(priv, MT7530_PVC_P(i), PVC_EG_TAG_MASK,
 			   PVC_EG_TAG(MT7530_VLAN_EG_CONSISTENT));
@@ -2708,11 +2819,16 @@ static const struct dsa_switch_ops mt7530_switch_ops = {
 	.port_change_mtu	= mt7530_port_change_mtu,
 	.port_max_mtu		= mt7530_port_max_mtu,
 	.port_stp_state_set	= mt7530_stp_state_set,
+	.port_pre_bridge_flags	= mt7530_port_pre_bridge_flags,
+	.port_bridge_flags	= mt7530_port_bridge_flags,
+	.port_set_mrouter	= mt7530_port_set_mrouter,
 	.port_bridge_join	= mt7530_port_bridge_join,
 	.port_bridge_leave	= mt7530_port_bridge_leave,
 	.port_fdb_add		= mt7530_port_fdb_add,
 	.port_fdb_del		= mt7530_port_fdb_del,
 	.port_fdb_dump		= mt7530_port_fdb_dump,
+	.port_mdb_add		= mt7530_port_mdb_add,
+	.port_mdb_del		= mt7530_port_mdb_del,
 	.port_vlan_filtering	= mt7530_port_vlan_filtering,
 	.port_vlan_add		= mt7530_port_vlan_add,
 	.port_vlan_del		= mt7530_port_vlan_del,