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author | Saeed Mahameed | 2017-03-24 22:52:10 +0100 |
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committer | David S. Miller | 2017-03-25 03:11:46 +0100 |
commit | 2239185ccd888a9934525e5b2d2f55890ab826f6 (patch) | |
tree | f5eb7724451f2315a26972fdcbb5a96fee7e8601 /drivers/net/ethernet/renesas/ravb.h | |
parent | net/mlx5e: Poll XDP TX CQ before RX CQ (diff) | |
download | kernel-qcow2-linux-2239185ccd888a9934525e5b2d2f55890ab826f6.tar.gz kernel-qcow2-linux-2239185ccd888a9934525e5b2d2f55890ab826f6.tar.xz kernel-qcow2-linux-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/renesas/ravb.h')
0 files changed, 0 insertions, 0 deletions