[net,01/11] net/mlx5e: Check for qos capability in dcbnl_initialize

Message ID 20170830222110.15737-2-saeedm@mellanox.com
State Accepted
Delegated to: David Miller
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  • [net,01/11] net/mlx5e: Check for qos capability in dcbnl_initialize
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Commit Message

Saeed Mahameed Aug. 30, 2017, 10:21 p.m.
From: Huy Nguyen <huyn@mellanox.com>

qos capability is the master capability bit that determines
if the DCBX is supported for the PCI function. If this bit is off,
driver cannot run any dcbx code.

Fixes: e207b7e99176 ("net/mlx5e: ConnectX-4 firmware support for DCBX")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
 drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 3 +++
 1 file changed, 3 insertions(+)


diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
index 2eb54d36e16e..810b51029c7f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c
@@ -754,6 +754,9 @@  void mlx5e_dcbnl_initialize(struct mlx5e_priv *priv)
 	struct mlx5e_dcbx *dcbx = &priv->dcbx;
+	if (!MLX5_CAP_GEN(priv->mdev, qos))
+		return;
 	if (MLX5_CAP_GEN(priv->mdev, dcbx))
 		mlx5e_dcbnl_query_dcbx_mode(priv, &dcbx->mode);