net/mlx5: do not invalidate title CQE

We can leave the title completion queue entry untouched since its contents
are not modified.

Reported-by: Liming Sun <lsun@mellanox.com>
Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
Acked-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>

diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 2c5ca74..63146ac 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -1160,7 +1160,7 @@ mlx5_rx_poll_len(struct rxq *rxq, volatile struct mlx5_cqe *cqe,
                        zip->na += 8;
                }
                if (unlikely(rxq->zip.ai == rxq->zip.cqe_cnt)) {
-                       uint16_t idx = rxq->cq_ci;
+                       uint16_t idx = rxq->cq_ci + 1;
                        uint16_t end = zip->cq_ci;
 
                        while (idx != end) {