diff options
| author | Saeed Mahameed <saeedm@mellanox.com> | 2016-09-21 12:19:44 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-22 02:51:40 -0400 |
| commit | e4b85508072b32682ba84df32cac5cf6a4f6178e (patch) | |
| tree | 8fadcf552730390a4e1f2afd4e2bfbd9dfb8a911 /drivers/net/ethernet | |
| parent | 21c59685dd176dd6b2c4fc5e18dc65730cfd546a (diff) | |
| download | linux-e4b85508072b32682ba84df32cac5cf6a4f6178e.tar.bz2 | |
net/mlx5e: Slightly reduce hardware LRO size
Before this patch LRO size was 64K, now with build_skb requires
extra room, headroom + sizeof(skb_shared_info) added to the data
buffer will make wqe size or page_frag_size slightly larger than
64K which will demand order 5 page instead of order 4 in 4K page systems.
We take those extra bytes from hardware LRO data size in order to not
increase the required page order for when hardware LRO is enabled.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index f2efa532f453..8734240865e1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -3187,8 +3187,11 @@ static void mlx5e_build_nic_netdev_priv(struct mlx5_core_dev *mdev, mlx5e_build_default_indir_rqt(mdev, priv->params.indirection_rqt, MLX5E_INDIR_RQT_SIZE, profile->max_nch(mdev)); - priv->params.lro_wqe_sz = - MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ; + priv->params.lro_wqe_sz = + MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ - + /* Extra room needed for build_skb */ + MLX5_RX_HEADROOM - + SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); /* Initialize pflags */ MLX5E_SET_PRIV_FLAG(priv, MLX5E_PFLAG_RX_CQE_BASED_MODER, |