net/mlx5e: Early-return on empty completion queues

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NAPI context handles different kinds of completion queues
(RX, TX, and others). Hence, upon a poll trial, some of them
might be empty.
Here we early-return upon empty completion queues, as well as
full rx buffer, and save unnecessary logic and memory barriers.

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

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Tariq Toukan 2017-06-19 18:11:30 +03:00 • committed by Saeed Mahameed

parent 4cbb755801

commit 4b7dfc9925

2 changed files with 32 additions and 24 deletions

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40

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

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16

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

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