ixgbevf: setup queue counts

Add calls for netif_set_real_num_t/rx_queues() in ixgbevf_open().
Make sure that calls to ixgbevf_open() are rtnl protected and improve
the error handling when setting up multiple queues.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index f8e1b1c..cb9d00a 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -3119,9 +3119,14 @@ static int ixgbevf_setup_all_tx_resources(struct ixgbevf_adapter *adapter)
                if (!err)
                        continue;
                hw_dbg(&adapter->hw, "Allocation for Tx Queue %u failed\n", i);
-               break;
+               goto err_setup_tx;
        }
 
+       return 0;
+err_setup_tx:
+       /* rewind the index freeing the rings as we go */
+       while (i--)
+               ixgbevf_free_tx_resources(adapter->tx_ring[i]);
        return err;
 }
 
@@ -3179,8 +3184,14 @@ static int ixgbevf_setup_all_rx_resources(struct ixgbevf_adapter *adapter)
                if (!err)
                        continue;
                hw_dbg(&adapter->hw, "Allocation for Rx Queue %u failed\n", i);
-               break;
+               goto err_setup_rx;
        }
+
+       return 0;
+err_setup_rx:
+       /* rewind the index freeing the rings as we go */
+       while (i--)
+               ixgbevf_free_rx_resources(adapter->rx_ring[i]);
        return err;
 }
 
@@ -3285,18 +3296,27 @@ int ixgbevf_open(struct net_device *netdev)
        if (err)
                goto err_req_irq;
 
+       /* Notify the stack of the actual queue counts. */
+       err = netif_set_real_num_tx_queues(netdev, adapter->num_tx_queues);
+       if (err)
+               goto err_set_queues;
+
+       err = netif_set_real_num_rx_queues(netdev, adapter->num_rx_queues);
+       if (err)
+               goto err_set_queues;
+
        ixgbevf_up_complete(adapter);
 
        return 0;
 
+err_set_queues:
+       ixgbevf_free_irq(adapter);
 err_req_irq:
-       ixgbevf_down(adapter);
-err_setup_rx:
        ixgbevf_free_all_rx_resources(adapter);
-err_setup_tx:
+err_setup_rx:
        ixgbevf_free_all_tx_resources(adapter);
+err_setup_tx:
        ixgbevf_reset(adapter);
-
 err_setup_reset:
 
        return err;
@@ -3948,17 +3968,11 @@ static int ixgbevf_resume(struct pci_dev *pdev)
 
        rtnl_lock();
        err = ixgbevf_init_interrupt_scheme(adapter);
+       if (!err && netif_running(netdev))
+               err = ixgbevf_open(netdev);
        rtnl_unlock();
-       if (err) {
-               dev_err(&pdev->dev, "Cannot initialize interrupts\n");
+       if (err)
                return err;
-       }
-
-       if (netif_running(netdev)) {
-               err = ixgbevf_open(netdev);
-               if (err)
-                       return err;
-       }
 
        netif_device_attach(netdev);