net/mlx5e: Verify dev is present in some ndos

We will re-use the native NIC port net device instance for the Uplink
representor. While changing profiles private resources are not
available but some ndos are not checking if the netdev is present.
So for those ndos check the netdev is present in the driver before
accessing the private resources.
Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c

@@ -169,6 +169,9 @@ static int mlx5e_rep_setup_tc_cb(enum tc_setup_type type, void *type_data,
 	unsigned long flags = MLX5_TC_FLAG(INGRESS) | MLX5_TC_FLAG(ESW_OFFLOAD);
 	struct mlx5e_priv *priv = cb_priv;
 
+	if (!priv->netdev || !netif_device_present(priv->netdev))
+		return -EOPNOTSUPP;
+
 	switch (type) {
 	case TC_SETUP_CLSFLOWER:
 		return mlx5e_rep_setup_tc_cls_flower(priv, type_data, flags);
@@ -321,6 +324,9 @@ mlx5e_rep_indr_offload(struct net_device *netdev,
 	struct mlx5e_priv *priv = netdev_priv(indr_priv->rpriv->netdev);
 	int err = 0;
 
+	if (!netif_device_present(indr_priv->rpriv->netdev))
+		return -EOPNOTSUPP;
+
 	switch (flower->command) {
 	case FLOW_CLS_REPLACE:
 		err = mlx5e_configure_flower(netdev, priv, flower, flags);

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

@@ -3769,8 +3769,16 @@ static int mlx5e_setup_tc(struct net_device *dev, enum tc_setup_type type,
 			  void *type_data)
 {
 	struct mlx5e_priv *priv = netdev_priv(dev);
+	bool tc_unbind = false;
 	int err;
 
+	if (type == TC_SETUP_BLOCK &&
+	    ((struct flow_block_offload *)type_data)->command == FLOW_BLOCK_UNBIND)
+		tc_unbind = true;
+
+	if (!netif_device_present(dev) && !tc_unbind)
+		return -ENODEV;
+
 	switch (type) {
 	case TC_SETUP_BLOCK: {
 		struct flow_block_offload *f = type_data;
@@ -3823,6 +3831,9 @@ mlx5e_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
 	struct mlx5e_priv *priv = netdev_priv(dev);
 	struct mlx5e_pport_stats *pstats = &priv->stats.pport;
 
+	if (!netif_device_present(dev))
+		return;
+
 	/* In switchdev mode, monitor counters doesn't monitor
 	 * rx/tx stats of 802_3. The update stats mechanism
 	 * should keep the 802_3 layout counters updated
@@ -4436,6 +4447,9 @@ int mlx5e_get_vf_config(struct net_device *dev,
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
 
+	if (!netif_device_present(dev))
+		return -EOPNOTSUPP;
+
 	err = mlx5_eswitch_get_vport_config(mdev->priv.eswitch, vf + 1, ivi);
 	if (err)
 		return err;
@@ -4458,6 +4472,9 @@ mlx5e_has_offload_stats(const struct net_device *dev, int attr_id)
 {
 	struct mlx5e_priv *priv = netdev_priv(dev);
 
+	if (!netif_device_present(dev))
+		return false;
+
 	if (!mlx5e_is_uplink_rep(priv))
 		return false;
 

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

@@ -4895,6 +4895,9 @@ int mlx5e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
 	unsigned long flags = MLX5_TC_FLAG(INGRESS);
 	struct mlx5e_priv *priv = cb_priv;
 
+	if (!priv->netdev || !netif_device_present(priv->netdev))
+		return -EOPNOTSUPP;
+
 	if (mlx5e_is_uplink_rep(priv))
 		flags |= MLX5_TC_FLAG(ESW_OFFLOAD);
 	else