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-rw-r--r--drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
index 9cf5f465caae..52a58af571a2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
@@ -42,12 +42,14 @@ static int mlx5i_open(struct net_device *netdev);
static int mlx5i_close(struct net_device *netdev);
static int mlx5i_dev_init(struct net_device *dev);
static void mlx5i_dev_cleanup(struct net_device *dev);
+static int mlx5i_change_mtu(struct net_device *netdev, int new_mtu);
static const struct net_device_ops mlx5i_netdev_ops = {
.ndo_open = mlx5i_open,
.ndo_stop = mlx5i_close,
.ndo_init = mlx5i_dev_init,
.ndo_uninit = mlx5i_dev_cleanup,
+ .ndo_change_mtu = mlx5i_change_mtu,
};
/* IPoIB mlx5 netdev profile */
@@ -312,6 +314,35 @@ static const struct mlx5e_profile mlx5i_nic_profile = {
/* mlx5i netdev NDos */
+static int mlx5i_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct mlx5e_priv *priv = mlx5i_epriv(netdev);
+ struct mlx5e_channels new_channels = {};
+ int curr_mtu;
+ int err = 0;
+
+ mutex_lock(&priv->state_lock);
+
+ curr_mtu = netdev->mtu;
+ netdev->mtu = new_mtu;
+
+ if (!test_bit(MLX5E_STATE_OPENED, &priv->state))
+ goto out;
+
+ new_channels.params = priv->channels.params;
+ err = mlx5e_open_channels(priv, &new_channels);
+ if (err) {
+ netdev->mtu = curr_mtu;
+ goto out;
+ }
+
+ mlx5e_switch_priv_channels(priv, &new_channels, NULL);
+
+out:
+ mutex_unlock(&priv->state_lock);
+ return err;
+}
+
static int mlx5i_dev_init(struct net_device *dev)
{
struct mlx5e_priv *priv = mlx5i_epriv(dev);