net/mlx4_core: Set initial admin GUIDs for VFs

To have out of the box experience, the PF generates random GUIDs who
serve as the initial admin values.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/net/ethernet/mellanox/mlx4/cmd.c

@@ -2350,6 +2350,7 @@ int mlx4_multi_func_init(struct mlx4_dev *dev)
 				oper_vport->qos_vport = MLX4_VPP_DEFAULT_VPORT;
 				vf_oper->vport[port].vlan_idx = NO_INDX;
 				vf_oper->vport[port].mac_idx = NO_INDX;
+				mlx4_set_random_admin_guid(dev, i, port);
 			}
 			spin_lock_init(&s_state->lock);
 		}

drivers/net/ethernet/mellanox/mlx4/main.c

@@ -2276,6 +2276,21 @@ __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port)
 }
 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid);
 
+void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port)
+{
+	struct mlx4_priv *priv = mlx4_priv(dev);
+	__be64 guid;
+
+	/* hw GUID */
+	if (entry == 0)
+		return;
+
+	get_random_bytes((char *)&guid, sizeof(guid));
+	guid &= ~(cpu_to_be64(1ULL << 56));
+	guid |= cpu_to_be64(1ULL << 57);
+	priv->mfunc.master.vf_admin[entry].vport[port].guid = guid;
+}
+
 static int mlx4_setup_hca(struct mlx4_dev *dev)
 {
 	struct mlx4_priv *priv = mlx4_priv(dev);

include/linux/mlx4/device.h

@@ -1348,6 +1348,7 @@ void mlx4_counter_free(struct mlx4_dev *dev, u32 idx);
 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry,
 			 int port);
 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port);
+void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port);
 int mlx4_flow_attach(struct mlx4_dev *dev,
 		     struct mlx4_net_trans_rule *rule, u64 *reg_id);
 int mlx4_flow_detach(struct mlx4_dev *dev, u64 reg_id);