[PATCH net V2 4/6] net/mlx5e: MACsec, add ASO poll loop in macsec_aso_set_arm_event

[Tariq Toukan <tariqt@nvidia.com>]

From: Gal Pressman <gal@nvidia.com>

The macsec_aso_set_arm_event function calls mlx5_aso_poll_cq once
without a retry loop. If the CQE is not immediately available after
posting the WQE, the function fails unnecessarily.

Use read_poll_timeout() to poll 3-10 usecs for CQE, consistent with
other ASO polling code paths in the driver.

Fixes: 739cfa34518e ("net/mlx5: Make ASO poll CQ usable in atomic context")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
index 641cd3a2cdfa..90b3bc5f9166 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/macsec.c
@@ -1386,7 +1386,8 @@ static int macsec_aso_set_arm_event(struct mlx5_core_dev *mdev, struct mlx5e_mac
 			   MLX5_ACCESS_ASO_OPC_MOD_MACSEC);
 	macsec_aso_build_ctrl(aso, &aso_wqe->aso_ctrl, in);
 	mlx5_aso_post_wqe(maso, false, &aso_wqe->ctrl);
-	err = mlx5_aso_poll_cq(maso, false);
+	read_poll_timeout(mlx5_aso_poll_cq, err, !err, 10, 10 * USEC_PER_MSEC,
+			  false, maso, false);
 	mutex_unlock(&aso->aso_lock);
 
 	return err;
-- 
2.44.0