net/mlx5e: Slightly increase RX page-cache size

In XDP_TX flow, we now get back quicker to each page in page-cache,
and on some occasions refcount does not get back to 1 on time, causing
some costly page allocations.
Slightly increase the size of RX page-cache to significantly decrease
the chances for this to happen.

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.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index e55d9439bc12b91c86cc7214f61136a55bc2aa56..9c0c07ffe5575b74ff78bb4d4fcfc0cdca4db21b 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -501,7 +501,7 @@ struct mlx5e_rx_am { /* Adaptive Moderation */
  */
 #define MLX5E_CACHE_UNIT       (MLX5_MPWRQ_PAGES_PER_WQE > NAPI_POLL_WEIGHT ? \
                                 MLX5_MPWRQ_PAGES_PER_WQE : NAPI_POLL_WEIGHT)
-#define MLX5E_CACHE_SIZE       (2 * roundup_pow_of_two(MLX5E_CACHE_UNIT))
+#define MLX5E_CACHE_SIZE       (4 * roundup_pow_of_two(MLX5E_CACHE_UNIT))
 struct mlx5e_page_cache {
        u32 head;
        u32 tail;