net/mlx4: Check if Granular QoS per VF has been enabled before updating QP qos_vport
The Granular QoS per VF feature must be enabled in FW before it can be used. Thus, the driver cannot modify a QP's qos_vport value (via the UPDATE_QP FW command) if the feature has not been enabled -- the FW returns an error if this is attempted. Fixes: 08068cd5 ("net/mlx4: Added qos_vport QP configuration in VST mode") Signed-off-by: Ido Shamay <idos@mellanox.com> Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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