diff options
| author |   Saeed Mahameed <saeedm@mellanox.com> | 2017-03-25 00:52:10 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2017-03-24 19:11:46 -0700 |
| commit | 2239185ccd888a9934525e5b2d2f55890ab826f6 (patch) | |
| tree | f5eb7724451f2315a26972fdcbb5a96fee7e8601 /drivers/net/ethernet/mellanox/mlx5/core/en.h | |
| parent | net/mlx5e: Poll XDP TX CQ before RX CQ (diff) | |
| download | linux-dev-2239185ccd888a9934525e5b2d2f55890ab826f6.tar.xz linux-dev-2239185ccd888a9934525e5b2d2f55890ab826f6.zip | |
net/mlx5e: Optimize XDP frame xmit
XDP SQ has a fixed size WQE (MLX5E_XDP_TX_WQEBBS = 1) and only posts
one kind of WQE (MLX5_OPCODE_SEND),
Also we initialize SQ descriptors static fields once on open_xdpsq,
rather than every time on critical path.
Optimize the code in light of those facts and add a prefetch of the TX
descriptor first thing in the xdp xmit function.
Performance improvement:
System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
Test case Before Now improvement
---------------------------------------------------------------
XDP TX (1 core) 13Mpps 13.7Mpps 5%
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx5/core/en.h')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index 5e4ae94c9f6a..f02d2cb8d148 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -116,12 +116,8 @@ (DIV_ROUND_UP(sizeof(struct mlx5e_umr_wqe), MLX5_SEND_WQE_BB)) #define MLX5E_XDP_MIN_INLINE (ETH_HLEN + VLAN_HLEN) -#define MLX5E_XDP_IHS_DS_COUNT \ - DIV_ROUND_UP(MLX5E_XDP_MIN_INLINE - 2, MLX5_SEND_WQE_DS) #define MLX5E_XDP_TX_DS_COUNT \ ((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) #define MLX5E_NUM_MAIN_GROUPS 9 @@ -352,7 +348,6 @@ struct mlx5e_sq { } txq; struct mlx5e_sq_wqe_info *ico_wqe; struct { - struct mlx5e_sq_wqe_info *wqe_info; struct mlx5e_dma_info *di; bool doorbell; } xdp; |