[patch net-next 11/16] mlxsw: spectrum_switchdev: Flood mc when mc is disabled by user flag

[Jiri Pirko]

From: Nogah Frankel <nog...@mellanox.com>

When multicast is disabled, flood mc packets only to port that are marked
BR_MCAST_FLOOD (instead to all).

Signed-off-by: Nogah Frankel <nog...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
 .../ethernet/mellanox/mlxsw/spectrum_switchdev.c    | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c 
b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 19ac206..50c4d7c 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -262,7 +262,8 @@ mlxsw_sp_bridge_port_create(struct mlxsw_sp_bridge_device 
*bridge_device,
        bridge_port->dev = brport_dev;
        bridge_port->bridge_device = bridge_device;
        bridge_port->stp_state = BR_STATE_DISABLED;
-       bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC;
+       bridge_port->flags = BR_LEARNING | BR_FLOOD | BR_LEARNING_SYNC |
+                            BR_MCAST_FLOOD;
        INIT_LIST_HEAD(&bridge_port->vlans_list);
        list_add(&bridge_port->list, &bridge_device->ports_list);
        bridge_port->ref_count = 1;
@@ -468,7 +469,8 @@ static int mlxsw_sp_port_attr_get(struct net_device *dev,
                                               &attr->u.brport_flags);
                break;
        case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS_SUPPORT:
-               attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD;
+               attr->u.brport_flags_support = BR_LEARNING | BR_FLOOD |
+                                              BR_MCAST_FLOOD;
                break;
        default:
                return -EOPNOTSUPP;
@@ -653,8 +655,18 @@ static int mlxsw_sp_port_attr_br_flags_set(struct 
mlxsw_sp_port *mlxsw_sp_port,
        if (err)
                return err;
 
-       memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags));
+       if (bridge_port->bridge_device->multicast_enabled)
+               goto out;
 
+       err = mlxsw_sp_bridge_port_flood_table_set(mlxsw_sp_port, bridge_port,
+                                                  MLXSW_SP_FLOOD_TYPE_MC,
+                                                  brport_flags &
+                                                  BR_MCAST_FLOOD);
+       if (err)
+               return err;
+
+out:
+       memcpy(&bridge_port->flags, &brport_flags, sizeof(brport_flags));
        return 0;
 }
 
@@ -747,7 +759,8 @@ static bool mlxsw_sp_mc_flood(const struct 
mlxsw_sp_bridge_port *bridge_port)
        const struct mlxsw_sp_bridge_device *bridge_device;
 
        bridge_device = bridge_port->bridge_device;
-       return !bridge_device->multicast_enabled ? true : bridge_port->mrouter;
+       return bridge_device->multicast_enabled ? bridge_port->mrouter :
+                                       bridge_port->flags & BR_MCAST_FLOOD;
 }
 
 static int mlxsw_sp_port_mc_disabled_set(struct mlxsw_sp_port *mlxsw_sp_port,
-- 
2.9.5