ixgbevf: Set the netdev number of Tx queues
The driver was not setting the number of real Tx queues in the net_device
structure. This caused some serious issues such as Tx hangs and extremely
poor performance with some usages of the driver.
The issue is best observed by running:
iperf -c <host> -P <n>
Where n is greater than one. The greater the value of n the more likely
the problem is to show up.
Signed-off-by: Greg Rose <gregory.v.rose@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 0ee9bd4..de1ad50 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1747,6 +1747,7 @@
**/
static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
{
+ struct net_device *netdev = adapter->netdev;
int err = 0;
int vector, v_budget;
@@ -1775,6 +1776,12 @@
ixgbevf_acquire_msix_vectors(adapter, v_budget);
+ err = netif_set_real_num_tx_queues(netdev, adapter->num_tx_queues);
+ if (err)
+ goto out;
+
+ err = netif_set_real_num_rx_queues(netdev, adapter->num_rx_queues);
+
out:
return err;
}