net/mlx5e: Poll XDP TX CQ before RX CQ

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Handle XDP TX completions before handling RX packets, to make sure more
free space is available for XDP TX packets a moment before handling
RX packets.

Performance improvement:
System: Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz

Test case              Before     Now      improvement
---------------------------------------------------------------
XDP Drop (1 core)      16.9Mpps  16.9Mpps    No change
XDP TX   (1 core)      12Mpps    13Mpps      8%

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Saeed Mahameed 2017-03-25 00:52:09 +03:00 • committed by David S. Miller

parent 31871f87bb

commit 39e12351a3

1 changed files with 3 additions and 3 deletions

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drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c

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