net/mlx5e: Non-atomic indicator for ring enabled state

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Rings enabled state change occurs in control path only, and is always
followed by a napi_sychronize(), so that following NAPIs read the
new value. This read does not need to be atomic.

The RQ auto-moderation bit is not set/cleared in data-path.
No need for atomic read, a regular read operation is sufficient.
In RQ creation time as well, there's no multiple threads trying
to access it yet, hence a regular read can be used.

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

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This commit is contained in:

Tariq Toukan 2017-07-03 11:27:20 +03:00 • committed by Saeed Mahameed

parent 604acb193b

commit a1eaba4c5c

5 changed files with 10 additions and 8 deletions

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2

drivers/net/ethernet/mellanox/mlx5/core/en.h

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2

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

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

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

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4

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

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