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net/mlx5e: Use only close NUMA node for default RSS

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Distribute default RSS table uniformly over the rings of the
close NUMA node, instead of all available channels.
This way we enforce the preference of close rings over far ones.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tariq Toukan 2016-04-20 22:02:11 +03:00 committed by David S. Miller
parent 593cf33829
commit d8c9660dac
3 changed files with 16 additions and 4 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -671,7 +671,8 @@ void mlx5e_build_tir_ctx_hash(void *tirc, struct mlx5e_priv *priv);
int mlx5e_open_locked(struct net_device *netdev); int mlx5e_open_locked(struct net_device *netdev);
int mlx5e_close_locked(struct net_device *netdev); int mlx5e_close_locked(struct net_device *netdev);
void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len, void mlx5e_build_default_indir_rqt(struct mlx5_core_dev *mdev,
u32 *indirection_rqt, int len,
int num_channels); int num_channels);
static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq, static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,

2
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -397,7 +397,7 @@ static int mlx5e_set_channels(struct net_device *dev,
mlx5e_close_locked(dev); mlx5e_close_locked(dev);
priv->params.num_channels = count; priv->params.num_channels = count;
mlx5e_build_default_indir_rqt(priv->params.indirection_rqt, mlx5e_build_default_indir_rqt(priv->mdev, priv->params.indirection_rqt,
MLX5E_INDIR_RQT_SIZE, count); MLX5E_INDIR_RQT_SIZE, count);
if (was_opened) if (was_opened)

15
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -2297,11 +2297,22 @@ static void mlx5e_ets_init(struct mlx5e_priv *priv)
} }
#endif #endif
void mlx5e_build_default_indir_rqt(u32 *indirection_rqt, int len, void mlx5e_build_default_indir_rqt(struct mlx5_core_dev *mdev,
u32 *indirection_rqt, int len,
int num_channels) int num_channels)
{ {
int node = mdev->priv.numa_node;
int node_num_of_cores;
int i; int i;
if (node == -1)
node = first_online_node;
node_num_of_cores = cpumask_weight(cpumask_of_node(node));
if (node_num_of_cores)
num_channels = min_t(int, num_channels, node_num_of_cores);
for (i = 0; i < len; i++) for (i = 0; i < len; i++)
indirection_rqt[i] = i % num_channels; indirection_rqt[i] = i % num_channels;
} }
@ -2333,7 +2344,7 @@ static void mlx5e_build_netdev_priv(struct mlx5_core_dev *mdev,
netdev_rss_key_fill(priv->params.toeplitz_hash_key, netdev_rss_key_fill(priv->params.toeplitz_hash_key,
sizeof(priv->params.toeplitz_hash_key)); sizeof(priv->params.toeplitz_hash_key));
mlx5e_build_default_indir_rqt(priv->params.indirection_rqt, mlx5e_build_default_indir_rqt(mdev, priv->params.indirection_rqt,
MLX5E_INDIR_RQT_SIZE, num_channels); MLX5E_INDIR_RQT_SIZE, num_channels);
priv->params.lro_wqe_sz = priv->params.lro_wqe_sz =