net/mlx5e: RX, Recycle buffer of UMR WQEs

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Upon a new UMR post, check if the WQE buffer contains
a previous UMR WQE. If so, modify the dynamic fields
instead of a whole WQE overwrite. This saves a memcpy.

In current setting, after 2 WQ cycles (12 UMR posts),
this will always be the case.

No degradation sensed.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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Tariq Toukan 2018-01-04 13:09:15 +02:00 • committed by Saeed Mahameed

parent b8a98a4cf3

commit ab966d7e4f

1 changed files with 9 additions and 2 deletions

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11

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

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