net/mlx5: prefetch CQEs for a faster decompression

[dpdk.git] / drivers / net / mlx5 / mlx5_rxtx_vec_altivec.h

diff --git a/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
index d55642e..9778b0b 100644 (file)
--- a/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
+++ b/drivers/net/mlx5/mlx5_rxtx_vec_altivec.h
@@ -155,8 +155,9 @@ rxq_cq_decompress_v(struct mlx5_rxq_data *rxq, volatile struct mlx5_cqe *cq,
                const vector unsigned long shmax = {64, 64};
 #endif
 
-               if (!(pos & 0x7) && pos + 8 < mcqe_n)
-                       rte_prefetch0((void *)(cq + pos + 8));
+               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 = (vector unsigned char)vec_vsx_ld(0,