[PATCH net 3/6] net/mlx5e: Do not reduce LRO WQE size when not using build_skb

[Saeed Mahameed]

From: Tariq Toukan <tar...@mellanox.com>

When rq_type is Striding RQ, no room of SKB_RESERVE is needed
as SKB allocation is not done via build_skb.

Fixes: e4b85508072b ("net/mlx5e: Slightly reduce hardware LRO size")
Signed-off-by: Tariq Toukan <tar...@mellanox.com>
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index c24366868b39..0d58729b42ae 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -82,6 +82,7 @@ static bool mlx5e_check_fragmented_striding_rq_cap(struct 
mlx5_core_dev *mdev)
 static void mlx5e_set_rq_type_params(struct mlx5e_priv *priv, u8 rq_type)
 {
        priv->params.rq_wq_type = rq_type;
+       priv->params.lro_wqe_sz = MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ;
        switch (priv->params.rq_wq_type) {
        case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
                priv->params.log_rq_size = is_kdump_kernel() ?
@@ -98,6 +99,10 @@ static void mlx5e_set_rq_type_params(struct mlx5e_priv 
*priv, u8 rq_type)
                priv->params.log_rq_size = is_kdump_kernel() ?
                        MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE :
                        MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE;
+
+               /* Extra room needed for build_skb */
+               priv->params.lro_wqe_sz -= MLX5_RX_HEADROOM +
+                       SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
        }
        priv->params.min_rx_wqes = mlx5_min_rx_wqes(priv->params.rq_wq_type,
                                               BIT(priv->params.log_rq_size));
@@ -3547,12 +3552,6 @@ 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 -
-               /* Extra room needed for build_skb */
-               MLX5_RX_HEADROOM -
-               SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
-
        /* Initialize pflags */
        MLX5E_SET_PFLAG(priv, MLX5E_PFLAG_RX_CQE_BASED_MODER,
                        priv->params.rx_cq_period_mode == 
MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
-- 
2.11.0