mlx4_en: Removing reserve vectors

Fixed a bug where ring size change caused insufficient memory
upon driver restart due to unreleased EQs.

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

4 files changed, 9 insertions, 11 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
index 70ec5298a16a..227997d775e8 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c
@@ -139,14 +139,13 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
         return 0;
 }
 
-void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
-                        bool reserve_vectors)
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
 {
         struct mlx4_en_dev *mdev = priv->mdev;
 
         mlx4_en_unmap_buffer(&cq->wqres.buf);
         mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
-        if (priv->mdev->dev->caps.comp_pool && cq->vector && !reserve_vectors)
+        if (priv->mdev->dev->caps.comp_pool && cq->vector)
                 mlx4_release_eq(priv->mdev->dev, cq->vector);
         cq->buf_size = 0;
         cq->buf = NULL;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
index eb096253d781..e247bd7bb940 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_ethtool.c
@@ -416,7 +416,7 @@ static int mlx4_en_set_ringparam(struct net_device *dev,
                 mlx4_en_stop_port(dev);
         }
 
-        mlx4_en_free_resources(priv, true);
+        mlx4_en_free_resources(priv);
 
         priv->prof->tx_ring_size = tx_size;
         priv->prof->rx_ring_size = rx_size;
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index b42c6aa70742..840298206532 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -876,7 +876,7 @@ static int mlx4_en_close(struct net_device *dev)
         return 0;
 }
 
-void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors)
+void mlx4_en_free_resources(struct mlx4_en_priv *priv)
 {
         int i;
 
@@ -884,14 +884,14 @@ void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors)
                 if (priv->tx_ring[i].tx_info)
                         mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
                 if (priv->tx_cq[i].buf)
-                        mlx4_en_destroy_cq(priv, &priv->tx_cq[i], reserve_vectors);
+                        mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
         }
 
         for (i = 0; i < priv->rx_ring_num; i++) {
                 if (priv->rx_ring[i].rx_info)
                         mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
                 if (priv->rx_cq[i].buf)
-                        mlx4_en_destroy_cq(priv, &priv->rx_cq[i], reserve_vectors);
+                        mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
         }
 }
 
@@ -961,7 +961,7 @@ void mlx4_en_destroy_netdev(struct net_device *dev)
         mdev->pndev[priv->port] = NULL;
         mutex_unlock(&mdev->state_lock);
 
-        mlx4_en_free_resources(priv, false);
+        mlx4_en_free_resources(priv);
         free_netdev(dev);
 }
 
diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
index 115784da8efa..fe8146d68b0a 100644
--- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
+++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h
@@ -502,13 +502,12 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
 int mlx4_en_start_port(struct net_device *dev);
 void mlx4_en_stop_port(struct net_device *dev);
 
-void mlx4_en_free_resources(struct mlx4_en_priv *priv, bool reserve_vectors);
+void mlx4_en_free_resources(struct mlx4_en_priv *priv);
 int mlx4_en_alloc_resources(struct mlx4_en_priv *priv);
 
 int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
                       int entries, int ring, enum cq_type mode);
-void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
-                        bool reserve_vectors);
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
 int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
                         int cq_idx);
 void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);