net/mlx5e: Do not busy-wait for UMR completion in Striding RQ

Do not busy-wait a pending UMR completion. Under high HW load,
busy-waiting a delayed completion would fully utilize the CPU core
and mistakenly indicate a SW bottleneck.

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

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 8aa94d3..8eb9e7e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -527,7 +527,7 @@ bool mlx5e_post_rx_mpwqes(struct mlx5e_rq *rq)
        if (!rq->mpwqe.umr_in_progress)
                mlx5e_alloc_rx_mpwqe(rq, wq->head);
 
-       return true;
+       return false;
 }
 
 static void mlx5e_lro_update_tcp_hdr(struct mlx5_cqe64 *cqe, struct tcphdr *tcp)