From: Alexander Guller Date: Sun, 9 Oct 2011 05:26:31 +0000 (+0000) Subject: mlx4_en: Assigning TX irq per ring X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=76532d0c7e7424914ab6f24683c63e50f0a08f1c;p=mv-sheeva.git mlx4_en: Assigning TX irq per ring Until now only RX rings used irq per ring and TX used only one per port. >From now on, both of them will use the irq per ring while RX & TX ring[i] will use the same irq. Signed-off-by: Alexander Guller Signed-off-by: Sharon Cohen Signed-off-by: Yevgeny Petrilin Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mellanox/mlx4/en_cq.c b/drivers/net/ethernet/mellanox/mlx4/en_cq.c index ec4b6d047fe..70ec5298a16 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_cq.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_cq.c @@ -74,7 +74,8 @@ int mlx4_en_create_cq(struct mlx4_en_priv *priv, return err; } -int mlx4_en_activate_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) { struct mlx4_en_dev *mdev = priv->mdev; int err = 0; @@ -90,13 +91,15 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) if (cq->is_tx == RX) { if (mdev->dev->caps.comp_pool) { if (!cq->vector) { - sprintf(name , "%s-rx-%d", priv->dev->name, cq->ring); + sprintf(name, "%s-%d", priv->dev->name, + cq->ring); + /* Set IRQ for specific name (per ring) */ if (mlx4_assign_eq(mdev->dev, name, &cq->vector)) { - cq->vector = (cq->ring + 1 + priv->port) % - mdev->dev->caps.num_comp_vectors; + cq->vector = (cq->ring + 1 + priv->port) + % mdev->dev->caps.num_comp_vectors; mlx4_warn(mdev, "Failed Assigning an EQ to " - "%s_rx-%d ,Falling back to legacy EQ's\n", - priv->dev->name, cq->ring); + "%s ,Falling back to legacy EQ's\n", + name); } } } else { @@ -104,10 +107,13 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) mdev->dev->caps.num_comp_vectors; } } else { - if (!cq->vector || !mdev->dev->caps.comp_pool) { - /*Fallback to legacy pool in case of error*/ - cq->vector = 0; - } + /* For TX we use the same irq per + ring we assigned for the RX */ + struct mlx4_en_cq *rx_cq; + + cq_idx = cq_idx % priv->rx_ring_num; + rx_cq = &priv->rx_cq[cq_idx]; + cq->vector = rx_cq->vector; } if (!cq->is_tx) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 27789be1e6a..b42c6aa7074 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -587,7 +587,6 @@ int mlx4_en_start_port(struct net_device *dev) int i; int j; u8 mc_list[16] = {0}; - char name[32]; if (priv->port_up) { en_dbg(DRV, priv, "start port called while port already up\n"); @@ -608,7 +607,7 @@ int mlx4_en_start_port(struct net_device *dev) for (i = 0; i < priv->rx_ring_num; i++) { cq = &priv->rx_cq[i]; - err = mlx4_en_activate_cq(priv, cq); + err = mlx4_en_activate_cq(priv, cq, i); if (err) { en_err(priv, "Failed activating Rx CQ\n"); goto cq_err; @@ -642,20 +641,11 @@ int mlx4_en_start_port(struct net_device *dev) goto mac_err; } - if (mdev->dev->caps.comp_pool && !priv->tx_vector) { - sprintf(name , "%s-tx", priv->dev->name); - if (mlx4_assign_eq(mdev->dev , name, &priv->tx_vector)) { - mlx4_warn(mdev, "Failed Assigning an EQ to " - "%s_tx ,Falling back to legacy " - "EQ's\n", priv->dev->name); - } - } /* Configure tx cq's and rings */ for (i = 0; i < priv->tx_ring_num; i++) { /* Configure cq */ cq = &priv->tx_cq[i]; - cq->vector = priv->tx_vector; - err = mlx4_en_activate_cq(priv, cq); + err = mlx4_en_activate_cq(priv, cq, i); if (err) { en_err(priv, "Failed allocating Tx CQ\n"); goto tx_err; diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index ed84811766e..115784da8ef 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -470,7 +470,6 @@ struct mlx4_en_priv { u16 log_rx_info; struct mlx4_en_tx_ring tx_ring[MAX_TX_RINGS]; - int tx_vector; struct mlx4_en_rx_ring rx_ring[MAX_RX_RINGS]; struct mlx4_en_cq tx_cq[MAX_TX_RINGS]; struct mlx4_en_cq rx_cq[MAX_RX_RINGS]; @@ -510,7 +509,8 @@ 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); -int mlx4_en_activate_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); int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq); int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);