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net/mlx4_en: RX, Add a prefetch command for small L1_CACHE_BYTES

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A single cacheline might not contain the packet header for
small L1_CACHE_BYTES values.
Use net_prefetch() as it issues an additional prefetch
in this case.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Tariq Toukan 2020-08-26 15:54:18 +03:00 committed by David S. Miller
parent e20f0dbf20
commit aed4d4c663
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx4/en_rx.c
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@ -705,7 +705,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
frags = ring->rx_info + (index << priv->log_rx_info);
va = page_address(frags[0].page) + frags[0].page_offset;
prefetchw(va);
net_prefetchw(va);
/*
* make sure we read the CQE after we read the ownership bit
*/