net/mlx5e: Fix incorrect access of RCU-protected xdp_prog

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rq->xdp_prog is RCU-protected and should be accessed only with
rcu_access_pointer for the NULL check in mlx5e_poll_rx_cq.

rq->xdp_prog may change on the fly only from one non-NULL value to
another non-NULL value, so the checks in mlx5e_xdp_handle and
mlx5e_poll_rx_cq will have the same result during one NAPI cycle,
meaning that no additional synchronization is needed.

Fixes: fe45386a20 ("net/mlx5e: Use RCU to protect rq->xdp_prog")
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Maxim Mikityanskiy 2020-10-22 12:49:51 +03:00 • committed by Saeed Mahameed

parent c5eb51adf0

commit 1a50cf9a67

1 changed files with 1 additions and 1 deletions

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

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