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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: cdcf11212b ('net/mlx5e: Validate BW weight values of ETS')
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eran Ben Elisha 2016-08-29 01:13:49 +03:00 committed by David S. Miller
parent bf50082c15
commit 1722b9694e
1 changed files with 16 additions and 5 deletions
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21
drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
View File

@ -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;