net/mlx5e: Fix traffic being dropped on VF representor
authorRoi Dayan <roid@mellanox.com>
Wed, 28 Feb 2018 10:56:42 +0000 (12:56 +0200)
committerSaeed Mahameed <saeedm@mellanox.com>
Mon, 26 Mar 2018 20:58:15 +0000 (13:58 -0700)
Increase representor netdev RQ size to avoid dropped packets.
The current size (two) is just too small to keep up with
conventional slow path traffic patterns.
Also match the SQ size to the RQ size.

Fixes: cb67b832921c ("net/mlx5e: Introduce SRIOV VF representors")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c

index 5ece289548ad27fd08afc9af727227ae626eb2f3..9a5a2a7eeab33c6d66dbe6aa01818c859d0ea25f 100644 (file)
 #include "en_tc.h"
 #include "fs_core.h"
 
 #include "en_tc.h"
 #include "fs_core.h"
 
+#define MLX5E_REP_PARAMS_LOG_SQ_SIZE \
+       max(0x6, MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE)
+#define MLX5E_REP_PARAMS_LOG_RQ_SIZE \
+       max(0x6, MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE)
+
 static const char mlx5e_rep_driver_name[] = "mlx5e_rep";
 
 static void mlx5e_rep_get_drvinfo(struct net_device *dev,
 static const char mlx5e_rep_driver_name[] = "mlx5e_rep";
 
 static void mlx5e_rep_get_drvinfo(struct net_device *dev,
@@ -878,9 +883,9 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev,
                                         MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
                                         MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
 
                                         MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
                                         MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
 
-       params->log_sq_size = MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
+       params->log_sq_size = MLX5E_REP_PARAMS_LOG_SQ_SIZE;
        params->rq_wq_type  = MLX5_WQ_TYPE_LINKED_LIST;
        params->rq_wq_type  = MLX5_WQ_TYPE_LINKED_LIST;
-       params->log_rq_size = MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE;
+       params->log_rq_size = MLX5E_REP_PARAMS_LOG_RQ_SIZE;
 
        params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
        mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
 
        params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
        mlx5e_set_rx_cq_mode_params(params, cq_period_mode);