mlxsw: spectrum: Create PVID vPort before registering netdevice

After registering a netdevice it's possible for user space applications
to configure an IP address on it. From the driver's perspective, this
means a router interface (RIF) should be created for the PVID vPort.

Therefore, we must create the PVID vPort before registering the
netdevice.

Fixes: 99724c18fc66 ("mlxsw: spectrum: Introduce support for router interfaces")
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.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
index a9281af..0677f3f 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c
@@ -942,8 +942,8 @@ static void mlxsw_sp_port_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_vport)
        kfree(mlxsw_sp_vport);
 }
 
-int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
-                         u16 vid)
+static int mlxsw_sp_port_add_vid(struct net_device *dev,
+                                __be16 __always_unused proto, u16 vid)
 {
        struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(dev);
        struct mlxsw_sp_port *mlxsw_sp_vport;
@@ -2048,6 +2048,18 @@ static int mlxsw_sp_port_ets_init(struct mlxsw_sp_port *mlxsw_sp_port)
        return 0;
 }
 
+static int mlxsw_sp_port_pvid_vport_create(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+       mlxsw_sp_port->pvid = 1;
+
+       return mlxsw_sp_port_add_vid(mlxsw_sp_port->dev, 0, 1);
+}
+
+static int mlxsw_sp_port_pvid_vport_destroy(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+       return mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
+}
+
 static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                                bool split, u8 module, u8 width, u8 lane)
 {
@@ -2163,6 +2175,13 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                goto err_port_dcb_init;
        }
 
+       err = mlxsw_sp_port_pvid_vport_create(mlxsw_sp_port);
+       if (err) {
+               dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create PVID vPort\n",
+                       mlxsw_sp_port->local_port);
+               goto err_port_pvid_vport_create;
+       }
+
        mlxsw_sp_port_switchdev_init(mlxsw_sp_port);
        err = register_netdev(dev);
        if (err) {
@@ -2180,18 +2199,14 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
                goto err_core_port_init;
        }
 
-       err = mlxsw_sp_port_vlan_init(mlxsw_sp_port);
-       if (err)
-               goto err_port_vlan_init;
-
        mlxsw_sp->ports[local_port] = mlxsw_sp_port;
        return 0;
 
-err_port_vlan_init:
-       mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
 err_core_port_init:
        unregister_netdev(dev);
 err_register_netdev:
+       mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
+err_port_pvid_vport_create:
        mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
 err_port_dcb_init:
 err_port_ets_init:
@@ -2221,8 +2236,8 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
        mlxsw_sp->ports[local_port] = NULL;
        mlxsw_core_port_fini(&mlxsw_sp_port->core_port);
        unregister_netdev(mlxsw_sp_port->dev); /* This calls ndo_stop */
+       mlxsw_sp_port_pvid_vport_destroy(mlxsw_sp_port);
        mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
-       mlxsw_sp_port_kill_vid(mlxsw_sp_port->dev, 0, 1);
        mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
        mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);
        mlxsw_sp_port_module_unmap(mlxsw_sp, mlxsw_sp_port->local_port);

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
index f69aa37..ab3feb8 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.h
@@ -536,8 +536,6 @@ int mlxsw_sp_port_vid_to_fid_set(struct mlxsw_sp_port *mlxsw_sp_port,
                                 u16 vid);
 int mlxsw_sp_port_vlan_set(struct mlxsw_sp_port *mlxsw_sp_port, u16 vid_begin,
                           u16 vid_end, bool is_member, bool untagged);
-int mlxsw_sp_port_add_vid(struct net_device *dev, __be16 __always_unused proto,
-                         u16 vid);
 int mlxsw_sp_vport_flood_set(struct mlxsw_sp_port *mlxsw_sp_vport, u16 fid,
                             bool set);
 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port);

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
index a1ad5e6..b5e864d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c
@@ -997,13 +997,13 @@ static int mlxsw_sp_port_obj_add(struct net_device *dev,
 }
 
 static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
-                                    u16 vid_begin, u16 vid_end, bool init)
+                                    u16 vid_begin, u16 vid_end)
 {
        struct net_device *dev = mlxsw_sp_port->dev;
        u16 vid, pvid;
        int err;
 
-       if (!init && !mlxsw_sp_port->bridged)
+       if (!mlxsw_sp_port->bridged)
                return -EINVAL;
 
        err = __mlxsw_sp_port_vlans_set(mlxsw_sp_port, vid_begin, vid_end,
@@ -1014,9 +1014,6 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
                return err;
        }
 
-       if (init)
-               goto out;
-
        pvid = mlxsw_sp_port->pvid;
        if (pvid >= vid_begin && pvid <= vid_end) {
                err = mlxsw_sp_port_pvid_set(mlxsw_sp_port, 0);
@@ -1028,7 +1025,6 @@ static int __mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
 
        mlxsw_sp_port_fid_leave(mlxsw_sp_port, vid_begin, vid_end);
 
-out:
        /* Changing activity bits only if HW operation succeded */
        for (vid = vid_begin; vid <= vid_end; vid++)
                clear_bit(vid, mlxsw_sp_port->active_vlans);
@@ -1039,8 +1035,8 @@ out:
 static int mlxsw_sp_port_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port,
                                   const struct switchdev_obj_port_vlan *vlan)
 {
-       return __mlxsw_sp_port_vlans_del(mlxsw_sp_port,
-                                        vlan->vid_begin, vlan->vid_end, false);
+       return __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vlan->vid_begin,
+                                        vlan->vid_end);
 }
 
 void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
@@ -1048,7 +1044,7 @@ void mlxsw_sp_port_active_vlans_del(struct mlxsw_sp_port *mlxsw_sp_port)
        u16 vid;
 
        for_each_set_bit(vid, mlxsw_sp_port->active_vlans, VLAN_N_VID)
-               __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid, false);
+               __mlxsw_sp_port_vlans_del(mlxsw_sp_port, vid, vid);
 }
 
 static int
@@ -1546,32 +1542,6 @@ void mlxsw_sp_switchdev_fini(struct mlxsw_sp *mlxsw_sp)
        mlxsw_sp_fdb_fini(mlxsw_sp);
 }
 
-int mlxsw_sp_port_vlan_init(struct mlxsw_sp_port *mlxsw_sp_port)
-{
-       struct net_device *dev = mlxsw_sp_port->dev;
-       int err;
-
-       /* Allow only untagged packets to ingress and tag them internally
-        * with VID 1.
-        */
-       mlxsw_sp_port->pvid = 1;
-       err = __mlxsw_sp_port_vlans_del(mlxsw_sp_port, 0, VLAN_N_VID - 1,
-                                       true);
-       if (err) {
-               netdev_err(dev, "Unable to init VLANs\n");
-               return err;
-       }
-
-       /* Add implicit VLAN interface in the device, so that untagged
-        * packets will be classified to the default vFID.
-        */
-       err = mlxsw_sp_port_add_vid(dev, 0, 1);
-       if (err)
-               netdev_err(dev, "Failed to configure default vFID\n");
-
-       return err;
-}
-
 void mlxsw_sp_port_switchdev_init(struct mlxsw_sp_port *mlxsw_sp_port)
 {
        mlxsw_sp_port->dev->switchdev_ops = &mlxsw_sp_port_switchdev_ops;