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net/mlx5e: Early-return on empty completion queues
authorTariq Toukan <tariqt@mellanox.com>
Mon, 19 Jun 2017 15:11:30 +0000 (18:11 +0300)
committerSaeed Mahameed <saeedm@mellanox.com>
Sun, 3 Sep 2017 03:34:08 +0000 (06:34 +0300)
commita8dcba942b88b8beb66cc68a025d1cfbbccf1113
tree346bcc87dfaefad75684dd4581c958319d47094atree | snapshot
parent2fc5b555d71865bf8929d3ddb6ce186281239166commit | diff
net/mlx5e: Early-return on empty completion queues

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>
drivers/net/ethernet/mellanox/mlx5/core/en_rx.c diff | blob | history
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c diff | blob | history
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