From 1722b9694ecfbc602865017c3fa6da0e3ec234d8 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Mon, 29 Aug 2016 01:13:49 +0300 Subject: [PATCH] net/mlx5: Add error prints when validate ETS failed Upon set ETS failure due to user invalid input, add error prints to specify the exact error to the user. Fixes: cdcf11212b22 ('net/mlx5e: Validate BW weight values of ETS') Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../ethernet/mellanox/mlx5/core/en_dcbnl.c | 21 ++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c index caa9a3ccc3f3..762af16ed021 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c @@ -127,29 +127,40 @@ int mlx5e_dcbnl_ieee_setets_core(struct mlx5e_priv *priv, struct ieee_ets *ets) return mlx5_set_port_tc_bw_alloc(mdev, tc_tx_bw); } -static int mlx5e_dbcnl_validate_ets(struct ieee_ets *ets) +static int mlx5e_dbcnl_validate_ets(struct net_device *netdev, + struct ieee_ets *ets) { int bw_sum = 0; int i; /* Validate Priority */ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { - if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) + if (ets->prio_tc[i] >= MLX5E_MAX_PRIORITY) { + netdev_err(netdev, + "Failed to validate ETS: priority value greater than max(%d)\n", + MLX5E_MAX_PRIORITY); return -EINVAL; + } } /* Validate Bandwidth Sum */ for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_ETS) { - if (!ets->tc_tx_bw[i]) + if (!ets->tc_tx_bw[i]) { + netdev_err(netdev, + "Failed to validate ETS: BW 0 is illegal\n"); return -EINVAL; + } bw_sum += ets->tc_tx_bw[i]; } } - if (bw_sum != 0 && bw_sum != 100) + if (bw_sum != 0 && bw_sum != 100) { + netdev_err(netdev, + "Failed to validate ETS: BW sum is illegal\n"); return -EINVAL; + } return 0; } @@ -159,7 +170,7 @@ static int mlx5e_dcbnl_ieee_setets(struct net_device *netdev, struct mlx5e_priv *priv = netdev_priv(netdev); int err; - err = mlx5e_dbcnl_validate_ets(ets); + err = mlx5e_dbcnl_validate_ets(netdev, ets); if (err) return err; -- 2.34.1