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Message-Id: <20211102002914.1052888-2-saeed@kernel.org>
Date: Mon, 1 Nov 2021 17:29:08 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, Saeed Mahameed <saeedm@...dia.com>,
Tariq Toukan <tariqt@...dia.com>
Subject: [net-next 1/7] net/mlx5e: Support ethtool cq mode
From: Saeed Mahameed <saeedm@...dia.com>
Add support for ethtool coalesce cq mode set and get.
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 7 ++-
.../ethernet/mellanox/mlx5/core/en_ethtool.c | 49 ++++++++++++++++---
.../net/ethernet/mellanox/mlx5/core/en_rep.c | 4 +-
.../mellanox/mlx5/core/ipoib/ethtool.c | 4 +-
4 files changed, 52 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index f0ac6b0d9653..48b12ee44b8d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1148,9 +1148,12 @@ void mlx5e_ethtool_get_channels(struct mlx5e_priv *priv,
int mlx5e_ethtool_set_channels(struct mlx5e_priv *priv,
struct ethtool_channels *ch);
int mlx5e_ethtool_get_coalesce(struct mlx5e_priv *priv,
- struct ethtool_coalesce *coal);
+ struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal);
int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
- struct ethtool_coalesce *coal);
+ struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack);
int mlx5e_ethtool_get_link_ksettings(struct mlx5e_priv *priv,
struct ethtool_link_ksettings *link_ksettings);
int mlx5e_ethtool_set_link_ksettings(struct mlx5e_priv *priv,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index c2ea5fad48dd..8a74fb4a8c52 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -511,7 +511,8 @@ static int mlx5e_set_channels(struct net_device *dev,
}
int mlx5e_ethtool_get_coalesce(struct mlx5e_priv *priv,
- struct ethtool_coalesce *coal)
+ struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal)
{
struct dim_cq_moder *rx_moder, *tx_moder;
@@ -528,6 +529,11 @@ int mlx5e_ethtool_get_coalesce(struct mlx5e_priv *priv,
coal->tx_max_coalesced_frames = tx_moder->pkts;
coal->use_adaptive_tx_coalesce = priv->channels.params.tx_dim_enabled;
+ kernel_coal->use_cqe_mode_rx =
+ MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_RX_CQE_BASED_MODER);
+ kernel_coal->use_cqe_mode_tx =
+ MLX5E_GET_PFLAG(&priv->channels.params, MLX5E_PFLAG_TX_CQE_BASED_MODER);
+
return 0;
}
@@ -538,7 +544,7 @@ static int mlx5e_get_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = netdev_priv(netdev);
- return mlx5e_ethtool_get_coalesce(priv, coal);
+ return mlx5e_ethtool_get_coalesce(priv, coal, kernel_coal);
}
#define MLX5E_MAX_COAL_TIME MLX5_MAX_CQ_PERIOD
@@ -578,14 +584,26 @@ mlx5e_set_priv_channels_rx_coalesce(struct mlx5e_priv *priv, struct ethtool_coal
}
}
+/* convert a boolean value of cq_mode to mlx5 period mode
+ * true : MLX5_CQ_PERIOD_MODE_START_FROM_CQE
+ * false : MLX5_CQ_PERIOD_MODE_START_FROM_EQE
+ */
+static int cqe_mode_to_period_mode(bool val)
+{
+ return val ? MLX5_CQ_PERIOD_MODE_START_FROM_CQE : MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
+}
+
int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
- struct ethtool_coalesce *coal)
+ struct ethtool_coalesce *coal,
+ struct kernel_ethtool_coalesce *kernel_coal,
+ struct netlink_ext_ack *extack)
{
struct dim_cq_moder *rx_moder, *tx_moder;
struct mlx5_core_dev *mdev = priv->mdev;
struct mlx5e_params new_params;
bool reset_rx, reset_tx;
bool reset = true;
+ u8 cq_period_mode;
int err = 0;
if (!MLX5_CAP_GEN(mdev, cq_moderation))
@@ -605,6 +623,12 @@ int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
return -ERANGE;
}
+ if ((kernel_coal->use_cqe_mode_rx || kernel_coal->use_cqe_mode_tx) &&
+ !MLX5_CAP_GEN(priv->mdev, cq_period_start_from_cqe)) {
+ NL_SET_ERR_MSG_MOD(extack, "cqe_mode_rx/tx is not supported on this device");
+ return -EOPNOTSUPP;
+ }
+
mutex_lock(&priv->state_lock);
new_params = priv->channels.params;
@@ -621,6 +645,18 @@ int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
reset_rx = !!coal->use_adaptive_rx_coalesce != priv->channels.params.rx_dim_enabled;
reset_tx = !!coal->use_adaptive_tx_coalesce != priv->channels.params.tx_dim_enabled;
+ cq_period_mode = cqe_mode_to_period_mode(kernel_coal->use_cqe_mode_rx);
+ if (cq_period_mode != rx_moder->cq_period_mode) {
+ mlx5e_set_rx_cq_mode_params(&new_params, cq_period_mode);
+ reset_rx = true;
+ }
+
+ cq_period_mode = cqe_mode_to_period_mode(kernel_coal->use_cqe_mode_tx);
+ if (cq_period_mode != tx_moder->cq_period_mode) {
+ mlx5e_set_tx_cq_mode_params(&new_params, cq_period_mode);
+ reset_tx = true;
+ }
+
if (reset_rx) {
u8 mode = MLX5E_GET_PFLAG(&new_params,
MLX5E_PFLAG_RX_CQE_BASED_MODER);
@@ -656,9 +692,9 @@ static int mlx5e_set_coalesce(struct net_device *netdev,
struct kernel_ethtool_coalesce *kernel_coal,
struct netlink_ext_ack *extack)
{
- struct mlx5e_priv *priv = netdev_priv(netdev);
+ struct mlx5e_priv *priv = netdev_priv(netdev);
- return mlx5e_ethtool_set_coalesce(priv, coal);
+ return mlx5e_ethtool_set_coalesce(priv, coal, kernel_coal, extack);
}
static void ptys2ethtool_supported_link(struct mlx5_core_dev *mdev,
@@ -2358,7 +2394,8 @@ static void mlx5e_get_rmon_stats(struct net_device *netdev,
const struct ethtool_ops mlx5e_ethtool_ops = {
.supported_coalesce_params = ETHTOOL_COALESCE_USECS |
ETHTOOL_COALESCE_MAX_FRAMES |
- ETHTOOL_COALESCE_USE_ADAPTIVE,
+ ETHTOOL_COALESCE_USE_ADAPTIVE|
+ ETHTOOL_COALESCE_USE_CQE,
.get_drvinfo = mlx5e_get_drvinfo,
.get_link = ethtool_op_get_link,
.get_link_ext_state = mlx5e_get_link_ext_state,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index e58a9ec42553..8c81aeba07db 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -258,7 +258,7 @@ static int mlx5e_rep_get_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = netdev_priv(netdev);
- return mlx5e_ethtool_get_coalesce(priv, coal);
+ return mlx5e_ethtool_get_coalesce(priv, coal, kernel_coal);
}
static int mlx5e_rep_set_coalesce(struct net_device *netdev,
@@ -268,7 +268,7 @@ static int mlx5e_rep_set_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = netdev_priv(netdev);
- return mlx5e_ethtool_set_coalesce(priv, coal);
+ return mlx5e_ethtool_set_coalesce(priv, coal, kernel_coal, extack);
}
static u32 mlx5e_rep_get_rxfh_key_size(struct net_device *netdev)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
index 962d41418ce7..f23e33ac9c6b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
@@ -105,7 +105,7 @@ static int mlx5i_set_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = mlx5i_epriv(netdev);
- return mlx5e_ethtool_set_coalesce(priv, coal);
+ return mlx5e_ethtool_set_coalesce(priv, coal, kernel_coal, extack);
}
static int mlx5i_get_coalesce(struct net_device *netdev,
@@ -115,7 +115,7 @@ static int mlx5i_get_coalesce(struct net_device *netdev,
{
struct mlx5e_priv *priv = mlx5i_epriv(netdev);
- return mlx5e_ethtool_get_coalesce(priv, coal);
+ return mlx5e_ethtool_get_coalesce(priv, coal, kernel_coal);
}
static int mlx5i_get_ts_info(struct net_device *netdev,
--
2.31.1
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