mlxsw: spectrum_switchdev: Don't warn about valid situations

Some operations in the bridge driver such as MDB deletion are preformed
in an atomic context and thus deferred to a process context by the
switchdev infrastructure.

Therefore, by the time the operation is performed by the underlying
device driver it's possible the bridge port context is already gone.
This is especially true for removal flows, but theoretically can also be
invoked during addition.

Remove the warnings in such situations and return normally.

Fixes: c57529e1d5d8 ("mlxsw: spectrum: Replace vPorts with Port-VLAN")
Fixes: 3922285d96e7 ("net: bridge: Add support for offloading port attributes")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 656b2d3f1bee0e8aa5b1f328d5066d60f5e96099..73d54df89578130bf4cb012d8ccc4fb79617787b 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -626,8 +626,8 @@ static int mlxsw_sp_port_attr_br_flags_set(struct mlxsw_sp_port *mlxsw_sp_port,
 
        bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
                                                orig_dev);
-       if (WARN_ON(!bridge_port))
-               return -EINVAL;
+       if (!bridge_port)
+               return 0;
 
        err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
                                                   MLXSW_SP_FLOOD_TYPE_UC,
@@ -711,8 +711,8 @@ static int mlxsw_sp_port_attr_mc_router_set(struct mlxsw_sp_port *mlxsw_sp_port,
 
        bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp_port->mlxsw_sp->bridge,
                                                orig_dev);
-       if (WARN_ON(!bridge_port))
-               return -EINVAL;
+       if (!bridge_port)
+               return 0;
 
        if (!bridge_port->bridge_device->multicast_enabled)
                return 0;
@@ -1283,15 +1283,15 @@ static int mlxsw_sp_port_mdb_add(struct mlxsw_sp_port *mlxsw_sp_port,
                return 0;
 
        bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
-       if (WARN_ON(!bridge_port))
-               return -EINVAL;
+       if (!bridge_port)
+               return 0;
 
        bridge_device = bridge_port->bridge_device;
        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
                                                               bridge_device,
                                                               mdb->vid);
-       if (WARN_ON(!mlxsw_sp_port_vlan))
-               return -EINVAL;
+       if (!mlxsw_sp_port_vlan)
+               return 0;
 
        fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);
 
@@ -1407,15 +1407,15 @@ static int mlxsw_sp_port_mdb_del(struct mlxsw_sp_port *mlxsw_sp_port,
        int err = 0;
 
        bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
-       if (WARN_ON(!bridge_port))
-               return -EINVAL;
+       if (!bridge_port)
+               return 0;
 
        bridge_device = bridge_port->bridge_device;
        mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_find_by_bridge(mlxsw_sp_port,
                                                               bridge_device,
                                                               mdb->vid);
-       if (WARN_ON(!mlxsw_sp_port_vlan))
-               return -EINVAL;
+       if (!mlxsw_sp_port_vlan)
+               return 0;
 
        fid_index = mlxsw_sp_fid_index(mlxsw_sp_port_vlan->fid);