From 4246f698dd58e3c6246fa919ef0b0a1d29a57e4a Mon Sep 17 00:00:00 2001 From: Roi Dayan Date: Wed, 28 Feb 2018 12:56:42 +0200 Subject: [PATCH] net/mlx5e: Fix traffic being dropped on VF representor 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 Reviewed-by: Paul Blakey Reviewed-by: Or Gerlitz Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c index 5ece289548ad..9a5a2a7eeab3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c @@ -44,6 +44,11 @@ #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, @@ -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; - 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->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);