net/mlx5e: Gather common netdev init/cleanup functionality in one place

Introduce a helper init/cleanup function that initializes mlx5e generic
netdev private structure, and use them from all profiles init/cleanup
callbacks.

This patch will also be helpful to initialize/cleanup netdevs that are
not created by mlx5 driver, e.g: accelerated ipoib child netdevs.

Fixes: 26e59d80 ("net/mlx5e: Implement mlx5e interface attach/detach callbacks")
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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

@@ -698,7 +698,7 @@ struct mlx5e_priv {
 };
 
 struct mlx5e_profile {
-	void	(*init)(struct mlx5_core_dev *mdev,
+	int	(*init)(struct mlx5_core_dev *mdev,
 			struct net_device *netdev,
 			const struct mlx5e_profile *profile, void *ppriv);
 	void	(*cleanup)(struct mlx5e_priv *priv);
@@ -962,6 +962,8 @@ int mlx5e_ethtool_flash_device(struct mlx5e_priv *priv,
 			       struct ethtool_flash *flash);
 
 /* mlx5e generic netdev management API */
+int mlx5e_netdev_init(struct net_device *netdev, struct mlx5e_priv *priv);
+void mlx5e_netdev_cleanup(struct net_device *netdev, struct mlx5e_priv *priv);
 struct net_device*
 mlx5e_create_netdev(struct mlx5_core_dev *mdev, const struct mlx5e_profile *profile,
 		    void *ppriv);

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

@@ -4749,7 +4749,7 @@ void mlx5e_destroy_q_counters(struct mlx5e_priv *priv)
 		mlx5_core_dealloc_q_counter(priv->mdev, priv->drop_rq_q_counter);
 }
 
-static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
+static int mlx5e_nic_init(struct mlx5_core_dev *mdev,
 			  struct net_device *netdev,
 			  const struct mlx5e_profile *profile,
 			  void *ppriv)
@@ -4757,6 +4757,10 @@ static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
 	struct mlx5e_priv *priv = netdev_priv(netdev);
 	int err;
 
+	err = mlx5e_netdev_init(netdev, priv);
+	if (err)
+		return err;
+
 	mlx5e_build_nic_netdev_priv(mdev, netdev, profile, ppriv);
 	err = mlx5e_ipsec_init(priv);
 	if (err)
@@ -4766,12 +4770,15 @@ static void mlx5e_nic_init(struct mlx5_core_dev *mdev,
 		mlx5_core_err(mdev, "TLS initialization failed, %d\n", err);
 	mlx5e_build_nic_netdev(netdev);
 	mlx5e_build_tc2txq_maps(priv);
+
+	return 0;
 }
 
 static void mlx5e_nic_cleanup(struct mlx5e_priv *priv)
 {
 	mlx5e_tls_cleanup(priv);
 	mlx5e_ipsec_cleanup(priv);
+	mlx5e_netdev_cleanup(priv->netdev, priv);
 }
 
 static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
@@ -4943,13 +4950,30 @@ static const struct mlx5e_profile mlx5e_nic_profile = {
 
 /* mlx5e generic netdev management API (move to en_common.c) */
 
+/* mlx5e_netdev_init/cleanup must be called from profile->init/cleanup callbacks */
+int mlx5e_netdev_init(struct net_device *netdev, struct mlx5e_priv *priv)
+{
+	netif_carrier_off(netdev);
+
+	priv->wq = create_singlethread_workqueue("mlx5e");
+	if (!priv->wq)
+		return -ENOMEM;
+
+	return 0;
+}
+
+void mlx5e_netdev_cleanup(struct net_device *netdev, struct mlx5e_priv *priv)
+{
+	destroy_workqueue(priv->wq);
+}
+
 struct net_device *mlx5e_create_netdev(struct mlx5_core_dev *mdev,
 				       const struct mlx5e_profile *profile,
 				       void *ppriv)
 {
 	int nch = profile->max_nch(mdev);
 	struct net_device *netdev;
-	struct mlx5e_priv *priv;
+	int err;
 
 	netdev = alloc_etherdev_mqs(sizeof(struct mlx5e_priv),
 				    nch * profile->max_tc,
@@ -4963,21 +4987,15 @@ struct net_device *mlx5e_create_netdev(struct mlx5_core_dev *mdev,
 	netdev->rx_cpu_rmap = mdev->rmap;
 #endif
 
-	profile->init(mdev, netdev, profile, ppriv);
-
-	netif_carrier_off(netdev);
-
-	priv = netdev_priv(netdev);
-
-	priv->wq = create_singlethread_workqueue("mlx5e");
-	if (!priv->wq)
-		goto err_cleanup_nic;
+	err = profile->init(mdev, netdev, profile, ppriv);
+	if (err) {
+		mlx5_core_err(mdev, "failed to init mlx5e profile %d\n", err);
+		goto err_free_netdev;
+	}
 
 	return netdev;
 
-err_cleanup_nic:
-	if (profile->cleanup)
-		profile->cleanup(priv);
+err_free_netdev:
 	free_netdev(netdev);
 
 	return NULL;
@@ -5031,7 +5049,6 @@ void mlx5e_destroy_netdev(struct mlx5e_priv *priv)
 	const struct mlx5e_profile *profile = priv->profile;
 	struct net_device *netdev = priv->netdev;
 
-	destroy_workqueue(priv->wq);
 	if (profile->cleanup)
 		profile->cleanup(priv);
 	free_netdev(netdev);

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

@@ -1078,28 +1078,40 @@ static void mlx5e_build_rep_netdev(struct net_device *netdev)
 	netdev->max_mtu = MLX5E_HW2SW_MTU(&priv->channels.params, max_mtu);
 }
 
-static void mlx5e_init_rep(struct mlx5_core_dev *mdev,
+static int mlx5e_init_rep(struct mlx5_core_dev *mdev,
 			  struct net_device *netdev,
 			  const struct mlx5e_profile *profile,
 			  void *ppriv)
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
+	int err;
 
 	priv->mdev                         = mdev;
 	priv->netdev                       = netdev;
 	priv->profile                      = profile;
 	priv->ppriv                        = ppriv;
 
-	mutex_init(&priv->state_lock);
+	err = mlx5e_netdev_init(netdev, priv);
+	if (err)
+		return err;
 
 	INIT_DELAYED_WORK(&priv->update_stats_work, mlx5e_update_stats_work);
 
-	priv->channels.params.num_channels = 1;
+	mutex_init(&priv->state_lock);
+
+	priv->channels.params.num_channels = profile->max_nch(mdev);
 
 	mlx5e_build_rep_params(mdev, &priv->channels.params, netdev->mtu);
 	mlx5e_build_rep_netdev(netdev);
 
 	mlx5e_timestamp_init(priv);
+
+	return 0;
+}
+
+static void mlx5e_cleanup_rep(struct mlx5e_priv *priv)
+{
+	mlx5e_netdev_cleanup(priv->netdev, priv);
 }
 
 static int mlx5e_create_rep_ttc_table(struct mlx5e_priv *priv)
@@ -1224,6 +1236,7 @@ static int mlx5e_init_rep_tx(struct mlx5e_priv *priv)
 
 static const struct mlx5e_profile mlx5e_rep_profile = {
 	.init			= mlx5e_init_rep,
+	.cleanup		= mlx5e_cleanup_rep,
 	.init_rx		= mlx5e_init_rep_rx,
 	.cleanup_rx		= mlx5e_cleanup_rep_rx,
 	.init_tx		= mlx5e_init_rep_tx,

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

@@ -71,13 +71,14 @@ static void mlx5i_build_nic_params(struct mlx5_core_dev *mdev,
 }
 
 /* Called directly after IPoIB netdevice was created to initialize SW structs */
-void mlx5i_init(struct mlx5_core_dev *mdev,
+int mlx5i_init(struct mlx5_core_dev *mdev,
 	       struct net_device *netdev,
 	       const struct mlx5e_profile *profile,
 	       void *ppriv)
 {
 	struct mlx5e_priv *priv  = mlx5i_epriv(netdev);
 	u16 max_mtu;
+	int err;
 
 	/* priv init */
 	priv->mdev        = mdev;
@@ -87,6 +88,10 @@ void mlx5i_init(struct mlx5_core_dev *mdev,
 	priv->max_opened_tc = 1;
 	mutex_init(&priv->state_lock);
 
+	err = mlx5e_netdev_init(netdev, priv);
+	if (err)
+		return err;
+
 	mlx5_query_port_max_mtu(mdev, &max_mtu, 1);
 	netdev->mtu = max_mtu;
 
@@ -108,12 +113,14 @@ void mlx5i_init(struct mlx5_core_dev *mdev,
 
 	netdev->netdev_ops = &mlx5i_netdev_ops;
 	netdev->ethtool_ops = &mlx5i_ethtool_ops;
+
+	return 0;
 }
 
 /* Called directly before IPoIB netdevice is destroyed to cleanup SW structs */
-static void mlx5i_cleanup(struct mlx5e_priv *priv)
+void mlx5i_cleanup(struct mlx5e_priv *priv)
 {
-	/* Do nothing .. */
+	mlx5e_netdev_cleanup(priv->netdev, priv);
 }
 
 static void mlx5i_grp_sw_update_stats(struct mlx5e_priv *priv)
@@ -650,7 +657,6 @@ static void mlx5_rdma_netdev_free(struct net_device *netdev)
 
 	mlx5e_detach_netdev(priv);
 	profile->cleanup(priv);
-	destroy_workqueue(priv->wq);
 
 	if (!ipriv->sub_interface) {
 		mlx5i_pkey_qpn_ht_cleanup(netdev);
@@ -683,16 +689,12 @@ static int mlx5_rdma_setup_rn(struct ib_device *ibdev, u8 port_num,
 	ipriv = netdev_priv(netdev);
 	epriv = mlx5i_epriv(netdev);
 
-	epriv->wq = create_singlethread_workqueue("mlx5i");
-	if (!epriv->wq)
-		return -ENOMEM;
-
 	ipriv->sub_interface = mlx5_is_sub_interface(mdev);
 	if (!ipriv->sub_interface) {
 		err = mlx5i_pkey_qpn_ht_init(netdev);
 		if (err) {
 			mlx5_core_warn(mdev, "allocate qpn_to_netdev ht failed\n");
-			goto destroy_wq;
+			return err;
 		}
 
 		/* This should only be called once per mdev */
@@ -721,8 +723,6 @@ static int mlx5_rdma_setup_rn(struct ib_device *ibdev, u8 port_num,
 
 destroy_ht:
 	mlx5i_pkey_qpn_ht_cleanup(netdev);
-destroy_wq:
-	destroy_workqueue(epriv->wq);
 	return err;
 }
 

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

@@ -84,10 +84,11 @@ void mlx5i_dev_cleanup(struct net_device *dev);
 int mlx5i_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
 
 /* Parent profile functions */
-void mlx5i_init(struct mlx5_core_dev *mdev,
+int mlx5i_init(struct mlx5_core_dev *mdev,
 	       struct net_device *netdev,
 	       const struct mlx5e_profile *profile,
 	       void *ppriv);
+void mlx5i_cleanup(struct mlx5e_priv *priv);
 
 /* Get child interface nic profile */
 const struct mlx5e_profile *mlx5i_pkey_get_profile(void);

drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib_vlan.c

@@ -275,14 +275,17 @@ static int mlx5i_pkey_change_mtu(struct net_device *netdev, int new_mtu)
 }
 
 /* Called directly after IPoIB netdevice was created to initialize SW structs */
-static void mlx5i_pkey_init(struct mlx5_core_dev *mdev,
+static int mlx5i_pkey_init(struct mlx5_core_dev *mdev,
 			   struct net_device *netdev,
 			   const struct mlx5e_profile *profile,
 			   void *ppriv)
 {
 	struct mlx5e_priv *priv  = mlx5i_epriv(netdev);
+	int err;
 
-	mlx5i_init(mdev, netdev, profile, ppriv);
+	err = mlx5i_init(mdev, netdev, profile, ppriv);
+	if (err)
+		return err;
 
 	/* Override parent ndo */
 	netdev->netdev_ops = &mlx5i_pkey_netdev_ops;
@@ -292,12 +295,14 @@ static void mlx5i_pkey_init(struct mlx5_core_dev *mdev,
 
 	/* Use dummy rqs */
 	priv->channels.params.log_rq_mtu_frames = MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE;
+
+	return 0;
 }
 
 /* Called directly before IPoIB netdevice is destroyed to cleanup SW structs */
 static void mlx5i_pkey_cleanup(struct mlx5e_priv *priv)
 {
-	/* Do nothing .. */
+	mlx5i_cleanup(priv);
 }
 
 static int mlx5i_pkey_init_tx(struct mlx5e_priv *priv)