net/mlx5: Clear VF's configuration on disabling SRIOV

When setting number of VFs to 0 (disable SRIOV), clear VF's
configuration.

Signed-off-by: Aya Levin <[email protected]>
Signed-off-by: Saeed Mahameed <[email protected]>

Author: ayalevin123

drivers/net/ethernet/mellanox/mlx5/core/eswitch.c

@@ -1831,6 +1831,15 @@ static void mlx5_eswitch_event_handlers_unregister(struct mlx5_eswitch *esw)
 	flush_workqueue(esw->work_queue);
 }
 
+static void mlx5_eswitch_clear_vf_vports_info(struct mlx5_eswitch *esw)
+{
+	struct mlx5_vport *vport;
+	int i;
+
+	mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
+		memset(&vport->info, 0, sizeof(vport->info));
+}
+
 /* Public E-Switch API */
 #define ESW_ALLOWED(esw) ((esw) && MLX5_ESWITCH_MANAGER((esw)->dev))
 
@@ -1923,7 +1932,7 @@ int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode)
 	return err;
 }
 
-void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
+void mlx5_eswitch_disable(struct mlx5_eswitch *esw, bool clear_vf)
 {
 	int old_mode;
 
@@ -1952,6 +1961,8 @@ void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
 		mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
 		mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_ETH);
 	}
+	if (clear_vf)
+		mlx5_eswitch_clear_vf_vports_info(esw);
 }
 
 int mlx5_eswitch_init(struct mlx5_core_dev *dev)

drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

@@ -270,7 +270,7 @@ int mlx5_esw_modify_vport_rate(struct mlx5_eswitch *esw, u16 vport_num,
 int mlx5_eswitch_init(struct mlx5_core_dev *dev);
 void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw);
 int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode);
-void mlx5_eswitch_disable(struct mlx5_eswitch *esw);
+void mlx5_eswitch_disable(struct mlx5_eswitch *esw, bool clear_vf);
 int mlx5_eswitch_set_vport_mac(struct mlx5_eswitch *esw,
 			       u16 vport, u8 mac[ETH_ALEN]);
 int mlx5_eswitch_set_vport_state(struct mlx5_eswitch *esw,
@@ -603,7 +603,7 @@ void mlx5_eswitch_disable_pf_vf_vports(struct mlx5_eswitch *esw);
 static inline int  mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }
 static inline void mlx5_eswitch_cleanup(struct mlx5_eswitch *esw) {}
 static inline int  mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode) { return 0; }
-static inline void mlx5_eswitch_disable(struct mlx5_eswitch *esw) {}
+static inline void mlx5_eswitch_disable(struct mlx5_eswitch *esw, bool clear_vf) {}
 static inline bool mlx5_esw_lag_prereq(struct mlx5_core_dev *dev0, struct mlx5_core_dev *dev1) { return true; }
 static inline bool mlx5_eswitch_is_funcs_handler(struct mlx5_core_dev *dev) { return false; }
 static inline const u32 *mlx5_esw_query_functions(struct mlx5_core_dev *dev)

drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c

@@ -1370,7 +1370,7 @@ static int esw_offloads_start(struct mlx5_eswitch *esw,
 		return -EINVAL;
 	}
 
-	mlx5_eswitch_disable(esw);
+	mlx5_eswitch_disable(esw, false);
 	mlx5_eswitch_update_num_of_vfs(esw, esw->dev->priv.sriov.num_vfs);
 	err = mlx5_eswitch_enable(esw, MLX5_ESWITCH_OFFLOADS);
 	if (err) {
@@ -2196,7 +2196,7 @@ static int esw_offloads_stop(struct mlx5_eswitch *esw,
 {
 	int err, err1;
 
-	mlx5_eswitch_disable(esw);
+	mlx5_eswitch_disable(esw, false);
 	err = mlx5_eswitch_enable(esw, MLX5_ESWITCH_LEGACY);
 	if (err) {
 		NL_SET_ERR_MSG_MOD(extack, "Failed setting eswitch to legacy");

drivers/net/ethernet/mellanox/mlx5/core/sriov.c

@@ -108,7 +108,7 @@ static int mlx5_device_enable_sriov(struct mlx5_core_dev *dev, int num_vfs)
 	return 0;
 }
 
-static void mlx5_device_disable_sriov(struct mlx5_core_dev *dev)
+static void mlx5_device_disable_sriov(struct mlx5_core_dev *dev, bool clear_vf)
 {
 	struct mlx5_core_sriov *sriov = &dev->priv.sriov;
 	int num_vfs = pci_num_vf(dev->pdev);
@@ -127,7 +127,7 @@ static void mlx5_device_disable_sriov(struct mlx5_core_dev *dev)
 	}
 
 	if (MLX5_ESWITCH_MANAGER(dev))
-		mlx5_eswitch_disable(dev->priv.eswitch);
+		mlx5_eswitch_disable(dev->priv.eswitch, clear_vf);
 
 	if (mlx5_wait_for_pages(dev, &dev->priv.vfs_pages))
 		mlx5_core_warn(dev, "timeout reclaiming VFs pages\n");
@@ -147,7 +147,7 @@ static int mlx5_sriov_enable(struct pci_dev *pdev, int num_vfs)
 	err = pci_enable_sriov(pdev, num_vfs);
 	if (err) {
 		mlx5_core_warn(dev, "pci_enable_sriov failed : %d\n", err);
-		mlx5_device_disable_sriov(dev);
+		mlx5_device_disable_sriov(dev, true);
 	}
 	return err;
 }
@@ -157,7 +157,7 @@ static void mlx5_sriov_disable(struct pci_dev *pdev)
 	struct mlx5_core_dev *dev  = pci_get_drvdata(pdev);
 
 	pci_disable_sriov(pdev);
-	mlx5_device_disable_sriov(dev);
+	mlx5_device_disable_sriov(dev, true);
 }
 
 int mlx5_core_sriov_configure(struct pci_dev *pdev, int num_vfs)
@@ -192,7 +192,7 @@ void mlx5_sriov_detach(struct mlx5_core_dev *dev)
 	if (!mlx5_core_is_pf(dev))
 		return;
 
-	mlx5_device_disable_sriov(dev);
+	mlx5_device_disable_sriov(dev, false);
 }
 
 static u16 mlx5_get_max_vfs(struct mlx5_core_dev *dev)