From 18cc42a3a17d19774b332e933cf34c71b0d3903c Mon Sep 17 00:00:00 2001
From: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Date: Mon, 29 Dec 2008 18:39:20 -0800
Subject: [PATCH] mlx4_en: Added "set_ringparam" Ethtool interface
implementation
Now using Ethtool to determine ring sizes, removed the module parameters
that controlled those values.
Modifying ring size requires restart of the interface.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/mlx4/en_netdev.c | 8 ++--
drivers/net/mlx4/en_params.c | 80 +++++++++++++++++++++++-------------
drivers/net/mlx4/mlx4_en.h | 6 +++
3 files changed, 61 insertions(+), 33 deletions(-)
diff --git a/drivers/net/mlx4/en_netdev.c b/drivers/net/mlx4/en_netdev.c
index ebada3c7aff2..15bb38d99304 100644
--- a/drivers/net/mlx4/en_netdev.c
+++ b/drivers/net/mlx4/en_netdev.c
@@ -552,7 +552,7 @@ static void mlx4_en_linkstate(struct work_struct *work)
}
-static int mlx4_en_start_port(struct net_device *dev)
+int mlx4_en_start_port(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
@@ -707,7 +707,7 @@ cq_err:
}
-static void mlx4_en_stop_port(struct net_device *dev)
+void mlx4_en_stop_port(struct net_device *dev)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
@@ -826,7 +826,7 @@ static int mlx4_en_close(struct net_device *dev)
return 0;
}
-static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
+void mlx4_en_free_resources(struct mlx4_en_priv *priv)
{
int i;
@@ -845,7 +845,7 @@ static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
}
}
-static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
{
struct mlx4_en_dev *mdev = priv->mdev;
struct mlx4_en_port_profile *prof = priv->prof;
diff --git a/drivers/net/mlx4/en_params.c b/drivers/net/mlx4/en_params.c
index 6483ae9d45b1..cfeef0f1bacc 100644
--- a/drivers/net/mlx4/en_params.c
+++ b/drivers/net/mlx4/en_params.c
@@ -65,12 +65,6 @@ MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
" Per priority bit mask");
-MLX4_EN_PARM_INT(tx_ring_size1, MLX4_EN_AUTO_CONF, "Tx ring size for port 1");
-MLX4_EN_PARM_INT(tx_ring_size2, MLX4_EN_AUTO_CONF, "Tx ring size for port 2");
-MLX4_EN_PARM_INT(rx_ring_size1, MLX4_EN_AUTO_CONF, "Rx ring size for port 1");
-MLX4_EN_PARM_INT(rx_ring_size2, MLX4_EN_AUTO_CONF, "Rx ring size for port 2");
-
-
int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
{
struct mlx4_en_profile *params = &mdev->profile;
@@ -84,6 +78,8 @@ int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
params->prof[i].rx_ppp = pfcrx;
params->prof[i].tx_pause = 1;
params->prof[i].tx_ppp = pfctx;
+ params->prof[i].tx_ring_size = MLX4_EN_DEF_TX_RING_SIZE;
+ params->prof[i].rx_ring_size = MLX4_EN_DEF_RX_RING_SIZE;
}
if (pfcrx || pfctx) {
params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
@@ -93,29 +89,6 @@ int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
params->prof[2].tx_ring_num = 1;
}
- if (tx_ring_size1 == MLX4_EN_AUTO_CONF)
- tx_ring_size1 = MLX4_EN_DEF_TX_RING_SIZE;
- params->prof[1].tx_ring_size =
- (tx_ring_size1 < MLX4_EN_MIN_TX_SIZE) ?
- MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size1);
-
- if (tx_ring_size2 == MLX4_EN_AUTO_CONF)
- tx_ring_size2 = MLX4_EN_DEF_TX_RING_SIZE;
- params->prof[2].tx_ring_size =
- (tx_ring_size2 < MLX4_EN_MIN_TX_SIZE) ?
- MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size2);
-
- if (rx_ring_size1 == MLX4_EN_AUTO_CONF)
- rx_ring_size1 = MLX4_EN_DEF_RX_RING_SIZE;
- params->prof[1].rx_ring_size =
- (rx_ring_size1 < MLX4_EN_MIN_RX_SIZE) ?
- MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size1);
-
- if (rx_ring_size2 == MLX4_EN_AUTO_CONF)
- rx_ring_size2 = MLX4_EN_DEF_RX_RING_SIZE;
- params->prof[2].rx_ring_size =
- (rx_ring_size2 < MLX4_EN_MIN_RX_SIZE) ?
- MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size2);
return 0;
}
@@ -412,6 +385,54 @@ static void mlx4_en_get_pauseparam(struct net_device *dev,
pause->rx_pause = priv->prof->rx_pause;
}
+static int mlx4_en_set_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *param)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ u32 rx_size, tx_size;
+ int port_up = 0;
+ int err = 0;
+
+ if (param->rx_jumbo_pending || param->rx_mini_pending)
+ return -EINVAL;
+
+ rx_size = roundup_pow_of_two(param->rx_pending);
+ rx_size = max_t(u32, rx_size, MLX4_EN_MIN_RX_SIZE);
+ tx_size = roundup_pow_of_two(param->tx_pending);
+ tx_size = max_t(u32, tx_size, MLX4_EN_MIN_TX_SIZE);
+
+ if (rx_size == priv->prof->rx_ring_size &&
+ tx_size == priv->prof->tx_ring_size)
+ return 0;
+
+ mutex_lock(&mdev->state_lock);
+ if (priv->port_up) {
+ port_up = 1;
+ mlx4_en_stop_port(dev);
+ }
+
+ mlx4_en_free_resources(priv);
+
+ priv->prof->tx_ring_size = tx_size;
+ priv->prof->rx_ring_size = rx_size;
+
+ err = mlx4_en_alloc_resources(priv);
+ if (err) {
+ mlx4_err(mdev, "Failed reallocating port resources\n");
+ goto out;
+ }
+ if (port_up) {
+ err = mlx4_en_start_port(dev);
+ if (err)
+ mlx4_err(mdev, "Failed starting port\n");
+ }
+
+out:
+ mutex_unlock(&mdev->state_lock);
+ return err;
+}
+
static void mlx4_en_get_ringparam(struct net_device *dev,
struct ethtool_ringparam *param)
{
@@ -451,6 +472,7 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
.get_pauseparam = mlx4_en_get_pauseparam,
.set_pauseparam = mlx4_en_set_pauseparam,
.get_ringparam = mlx4_en_get_ringparam,
+ .set_ringparam = mlx4_en_set_ringparam,
.get_flags = ethtool_op_get_flags,
.set_flags = ethtool_op_set_flags,
};
diff --git a/drivers/net/mlx4/mlx4_en.h b/drivers/net/mlx4/mlx4_en.h
index e78209768def..2e96c7b2180a 100644
--- a/drivers/net/mlx4/mlx4_en.h
+++ b/drivers/net/mlx4/mlx4_en.h
@@ -489,6 +489,12 @@ void mlx4_en_destroy_netdev(struct net_device *dev);
int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
struct mlx4_en_port_profile *prof);
+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);
+int mlx4_en_alloc_resources(struct mlx4_en_priv *priv);
+
int mlx4_en_get_profile(struct mlx4_en_dev *mdev);
int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,