net/mlx4_core: Fix wrong calculation of free counters

The field res_free indicates the total number of counters which are
available for allocation (reserved and unreserved). Fixed a bug where
the reserved counters were subtracted from res_free before any
allocation was performed.

Before this fix, free counters which were not reserved could not be
allocated.

Fixes: 9de92c60beaa ("net/mlx4_core: Adjust counter grant policy in the resource tracker")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-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>

diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 04304dd894c6c3119eb24302fe599766dadd3708..606a0e0beeae6961ae4e8c7a357d737834be614e 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -611,7 +611,6 @@ int mlx4_init_resource_tracker(struct mlx4_dev *dev)
                                                MLX4_MAX_PORTS;
                                else
                                        res_alloc->guaranteed[t] = 0;
-                               res_alloc->res_free -= res_alloc->guaranteed[t];
                                break;
                        default:
                                break;