net/mlx5e: Sync netdev vxlan ports at open

BugLink: http://bugs.launchpad.net/bugs/1763366
[ Upstream commit a117f73dc2430443f23e18367fa545981129c1a6 ]

When mlx5_core is loaded it is expected to sync ports
with all vxlan devices so it can support vxlan encap/decap.
This is done via udp_tunnel_get_rx_info(). Currently this
call is set in mlx5e_nic_enable() and if the netdev is not in
NETREG_REGISTERED state it will not be called.

Normally on load the netdev state is not NETREG_REGISTERED
so udp_tunnel_get_rx_info() will not be called.

Moving udp_tunnel_get_rx_info() to mlx5e_open() so
it will be called on netdev UP event and allow encap/decap.

Fixes: 610e89e05c3f ("net/mlx5e: Don't sync netdev state when not registered")
Signed-off-by: Shahar Klein <shahark@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 33faac2b194c2cdf0cdc3294a4013902bd1c64b4..f5a704c7d143dc080615f2768f5dd3fa03dd04c6 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2715,6 +2715,9 @@ int mlx5e_open(struct net_device *netdev)
                mlx5_set_port_admin_status(priv->mdev, MLX5_PORT_UP);
        mutex_unlock(&priv->state_lock);
 
+       if (mlx5e_vxlan_allowed(priv->mdev))
+               udp_tunnel_get_rx_info(netdev);
+
        return err;
 }
 
@@ -4428,12 +4431,6 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv)
 #ifdef CONFIG_MLX5_CORE_EN_DCB
        mlx5e_dcbnl_init_app(priv);
 #endif
-       /* Device already registered: sync netdev system state */
-       if (mlx5e_vxlan_allowed(mdev)) {
-               rtnl_lock();
-               udp_tunnel_get_rx_info(netdev);
-               rtnl_unlock();
-       }
 
        queue_work(priv->wq, &priv->set_rx_mode_work);