Patch "net/mlx5e: Sync netdev vxlan ports at open" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

net/mlx5e: Sync netdev vxlan ports at open

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
net-mlx5e-sync-netdev-vxlan-ports-at-open.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Shahar Klein <[email protected]>
Date: Tue, 20 Mar 2018 14:44:40 +0200
Subject: net/mlx5e: Sync netdev vxlan ports at open

From: Shahar Klein <[email protected]>

[ 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.

---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

@@ -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 mlx5
 #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);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/net-mlx5e-sync-netdev-vxlan-ports-at-open.patch