net/mlx5e: FPGA, fix Innova IPsec TX offload data path performance

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At Innova IPsec TX offload data path a special software parser metadata
is used to pass some packet attributes to the hardware, this metadata
is passed using the Ethernet control segment of a WQE (a HW descriptor)
header.

The cited commit might nullify this header, hence the metadata is lost,
this caused a significant performance drop during hw offloading
operation.

Fix by restoring the metadata at the Ethernet control segment in case
it was nullified.

Fixes: 37fdffb217 ("net/mlx5: WQ, fixes for fragmented WQ buffers API")
Signed-off-by: Raed Salem <raeds@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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Raed Salem 2018-12-17 11:40:06 +02:00 • committed by Saeed Mahameed

parent f09bef61f1

commit 82eaa1fa04

1 changed files with 6 additions and 0 deletions

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6

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

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