net/mlx5: fix vectorized mini-CQE prefetching

[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx_vec_sse.h

diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_sse.h b/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
index 34e3397..554924d 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_sse.h
@@ -135,7 +135,6 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
                for (i = 0; i < MLX5_VPMD_DESCS_PER_LOOP; ++i)
                        if (likely(pos + i < mcqe_n))
                                rte_prefetch0((void *)(cq + pos + i));
-
                /* A.1 load mCQEs into a 128bit register. */
                mcqe1 = _mm_loadu_si128((__m128i *)&mcq[pos % 8]);
                mcqe2 = _mm_loadu_si128((__m128i *)&mcq[pos % 8 + 2]);
@@ -214,6 +213,8 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
                pos += MLX5_VPMD_DESCS_PER_LOOP;
                /* Move to next CQE and invalidate consumed CQEs. */
                if (!(pos & 0x7) && pos < mcqe_n) {
+                       if (pos + 8 < mcqe_n)
+                               rte_prefetch0((void *)(cq + pos + 8));
                        mcq = (void *)(cq + pos);
                        for (i = 0; i < 8; ++i)
                                cq[inv++].op_own = MLX5_CQE_INVALIDATE;