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| author | Saeed Mahameed | 2016-12-06 13:04:05 +0100 |
|---|---|---|
| committer | Saeed Mahameed | 2017-02-06 17:20:18 +0100 |
| commit | b70149dd7dc98661fbbfe7281f127caa408028fe (patch) | |
| tree | c821d4619a8acc9e01a2078bed52193bc5e8a2a9 /drivers/net/ethernet/mellanox/mlx5/core/en.h | |
| parent | net/mlx5e: Tx, no inline copy on ConnectX-5 (diff) | |
| download | kernel-qcow2-linux-b70149dd7dc98661fbbfe7281f127caa408028fe.tar.gz kernel-qcow2-linux-b70149dd7dc98661fbbfe7281f127caa408028fe.tar.xz kernel-qcow2-linux-b70149dd7dc98661fbbfe7281f127caa408028fe.zip | |
net/mlx5e: XDP Tx, no inline copy on ConnectX-5
ConnectX-5 and later HW generations will report min inline mode ==
MLX5_INLINE_MODE_NONE, which means driver is not required to copy packet
headers to inline fields of TX WQE.
Avoid copy to inline segment in XDP TX routine when HW inline mode doesn't
require it.
This will improve CPU utilization and boost XDP TX performance.
Tested with xdp2 single flow:
CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
HCA: Mellanox Technologies MT28800 Family [ConnectX-5 Ex]
Before: 7.4Mpps
After: 7.8Mpps
Improvement: 5%
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 9b23d3329847..8be4b12b5545 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -120,8 +120,7 @@ #define MLX5E_XDP_IHS_DS_COUNT \ DIV_ROUND_UP(MLX5E_XDP_MIN_INLINE - 2, MLX5_SEND_WQE_DS) #define MLX5E_XDP_TX_DS_COUNT \ - (MLX5E_XDP_IHS_DS_COUNT + \ - (sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) + 1 /* SG DS */) + ((sizeof(struct mlx5e_tx_wqe) / MLX5_SEND_WQE_DS) + 1 /* SG DS */) #define MLX5E_XDP_TX_WQEBBS \ DIV_ROUND_UP(MLX5E_XDP_TX_DS_COUNT, MLX5_SEND_WQEBB_NUM_DS) |