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net/mlx5e: Support ethtool cq mode

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Add support for ethtool coalesce cq mode set and get.

Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
This commit is contained in:
Saeed Mahameed 2021-09-14 23:26:17 -07:00
parent b9241f5413
commit bc541621f8
4 changed files with 52 additions and 12 deletions
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7
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -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,

47
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -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);
@ -658,7 +694,7 @@ static int mlx5e_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 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,

4
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View File

@ -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)

4
drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
View File

@ -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,