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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>
This commit is contained in:
Tariq Toukan 2017-07-02 17:33:59 +03:00 committed by Saeed Mahameed
parent 70871f1ec4
commit 29c2849e0d
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/mellanox/mlx5/core/en.h
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@ -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;