mlxsw: spectrum_switchdev: remove transactional logic for VLAN objects

As of commit 457e20d65924 ("mlxsw: spectrum_switchdev: Avoid returning
errors in commit phase"), the mlxsw driver performs the VLAN object
offloading during the prepare phase. So conversion just seems to be a
matter of removing the code that was running in the commit phase.

Ido Schimmel explains that the reason why mlxsw_sp_span_respin is called
unconditionally is because the bridge driver will ignore -EOPNOTSUPP and
actually add the VLAN on the bridge device - see commit 9c86ce2c1ae3
("net: bridge: Notify about bridge VLANs") and commit ea4721751977
("mlxsw: spectrum_switchdev: Ignore bridge VLAN events"). Since the VLAN
was successfully added on the bridge device, mlxsw_sp_span_respin_work()
should be able to resolve the egress port for a packet that is mirrored
to a gre tap and passes through the bridge device. Therefore keep the
logic as it is.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index 409c206..20c4f3c 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -1196,7 +1196,6 @@ mlxsw_sp_br_ban_rif_pvid_change(struct mlxsw_sp *mlxsw_sp,
 
 static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
                                   const struct switchdev_obj_port_vlan *vlan,
-                                  struct switchdev_trans *trans,
                                   struct netlink_ext_ack *extack)
 {
        bool flag_untagged = vlan->flags & BRIDGE_VLAN_INFO_UNTAGGED;
@@ -1209,8 +1208,7 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
                int err = 0;
 
                if ((vlan->flags & BRIDGE_VLAN_INFO_BRENTRY) &&
-                   br_vlan_enabled(orig_dev) &&
-                   switchdev_trans_ph_prepare(trans))
+                   br_vlan_enabled(orig_dev))
                        err = mlxsw_sp_br_ban_rif_pvid_change(mlxsw_sp,
                                                              orig_dev, vlan);
                if (!err)
@@ -1218,9 +1216,6 @@ static int mlxsw_sp_port_vlans_add(struct mlxsw_sp_port *mlxsw_sp_port,
                return err;
        }
 
-       if (switchdev_trans_ph_commit(trans))
-               return 0;
-
        bridge_port = mlxsw_sp_bridge_port_find(mlxsw_sp->bridge, orig_dev);
        if (WARN_ON(!bridge_port))
                return -EINVAL;
@@ -1764,16 +1759,13 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
 {
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        const struct switchdev_obj_port_vlan *vlan;
-       struct switchdev_trans trans;
        int err = 0;
 
        switch (obj->id) {
        case SWITCHDEV_OBJ_ID_PORT_VLAN:
                vlan = SWITCHDEV_OBJ_PORT_VLAN(obj);
 
-               trans.ph_prepare = true;
-               err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
-                                             extack);
+               err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, extack);
 
                /* The event is emitted before the changes are actually
                 * applied to the bridge. Therefore schedule the respin
@@ -1781,13 +1773,6 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
                 * updated bridge state.
                 */
                mlxsw_sp_span_respin(mlxsw_sp_port->mlxsw_sp);
-
-               if (err)
-                       break;
-
-               trans.ph_prepare = false;
-               err = mlxsw_sp_port_vlans_add(mlxsw_sp_port, vlan, &trans,
-                                             extack);
                break;
        case SWITCHDEV_OBJ_ID_PORT_MDB:
                err = mlxsw_sp_port_mdb_add(mlxsw_sp_port,
@@ -3351,8 +3336,7 @@ out:
 static int
 mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
                                   struct switchdev_notifier_port_obj_info *
-                                  port_obj_info,
-                                  struct switchdev_trans *trans)
+                                  port_obj_info)
 {
        struct switchdev_obj_port_vlan *vlan =
                SWITCHDEV_OBJ_PORT_VLAN(port_obj_info->obj);
@@ -3374,9 +3358,6 @@ mlxsw_sp_switchdev_vxlan_vlans_add(struct net_device *vxlan_dev,
 
        port_obj_info->handled = true;
 
-       if (switchdev_trans_ph_commit(trans))
-               return 0;
-
        bridge_device = mlxsw_sp_bridge_device_find(mlxsw_sp->bridge, br_dev);
        if (!bridge_device)
                return -EINVAL;
@@ -3427,22 +3408,12 @@ mlxsw_sp_switchdev_handle_vxlan_obj_add(struct net_device *vxlan_dev,
                                        struct switchdev_notifier_port_obj_info *
                                        port_obj_info)
 {
-       struct switchdev_trans trans;
        int err = 0;
 
        switch (port_obj_info->obj->id) {
        case SWITCHDEV_OBJ_ID_PORT_VLAN:
-               trans.ph_prepare = true;
-               err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
-                                                        port_obj_info,
-                                                        &trans);
-               if (err)
-                       break;
-
-               trans.ph_prepare = false;
                err = mlxsw_sp_switchdev_vxlan_vlans_add(vxlan_dev,
-                                                        port_obj_info,
-                                                        &trans);
+                                                        port_obj_info);
                break;
        default:
                break;