mlx4_en: Returning real Max in get_ringparam

Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/mlx4/en_params.c

@@ -399,8 +399,10 @@ static int mlx4_en_set_ringparam(struct net_device *dev,
 
 	rx_size = roundup_pow_of_two(param->rx_pending);
 	rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
+	rx_size = min_t(u32, rx_size, MLX4_EN_MAX_RX_SIZE);
 	tx_size = roundup_pow_of_two(param->tx_pending);
 	tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
+	tx_size = min_t(u32, tx_size, MLX4_EN_MAX_TX_SIZE);
 
 	if (rx_size == priv->prof->rx_ring_size &&
 	    tx_size == priv->prof->tx_ring_size)
@@ -440,8 +442,8 @@ static void mlx4_en_get_ringparam(struct net_device *dev,
 	struct mlx4_en_dev *mdev = priv->mdev;
 
 	memset(param, 0, sizeof(*param));
-	param->rx_max_pending = mdev->dev->caps.max_rq_sg;
-	param->tx_max_pending = mdev->dev->caps.max_sq_sg;
+	param->rx_max_pending = MLX4_EN_MAX_RX_SIZE;
+	param->tx_max_pending = MLX4_EN_MAX_TX_SIZE;
 	param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
 	param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
 }

drivers/net/mlx4/mlx4_en.h

@@ -115,6 +115,10 @@ enum {
 };
 #define MLX4_EN_MAX_RX_FRAGS	4
 
+/* Maximum ring sizes */
+#define MLX4_EN_MAX_TX_SIZE	8192
+#define MLX4_EN_MAX_RX_SIZE	8192
+
 /* Minimum ring size for our page-allocation sceme to work */
 #define MLX4_EN_MIN_RX_SIZE	(MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES)
 #define MLX4_EN_MIN_TX_SIZE	(4096 / TXBB_SIZE)