[Bridge] [RFC PATCH v3 net-next 11/24] net: mlxsw: guard against multiple switchdev obj replays on same bridge port

Vladimir Oltean vladimir.oltean at nxp.com
Mon Jul 12 15:21:29 UTC 2021


Prepare the mlxsw driver, which supports LAG offload, to deal with
bridge switchdev objects being replayed on the LAG bridge port multiple
times, once for each time a physical port beneath the LAG calls
switchdev_bridge_port_offload().

Signed-off-by: Vladimir Oltean <vladimir.oltean at nxp.com>
---
 drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index cbcf38338f3e..9f72912e4982 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1774,6 +1774,9 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev, const void *ctx,
 	const struct switchdev_obj_port_vlan *vlan;
 	int err = 0;
 
+	if (ctx && ctx != mlxsw_sp_port)
+		return 0;
+
 	switch (obj->id) {
 	case SWITCHDEV_OBJ_ID_PORT_VLAN:
 		vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
@@ -1922,6 +1925,9 @@ static int mlxsw_sp_port_obj_del(struct net_device *dev, const void *ctx,
 	struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
 	int err = 0;
 
+	if (ctx && ctx != mlxsw_sp_port)
+		return 0;
+
 	switch (obj->id) {
 	case SWITCHDEV_OBJ_ID_PORT_VLAN:
 		err = mlxsw_sp_port_vlans_del(mlxsw_sp_port,
-- 
2.25.1



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