Techwizz/kernel-fxtec-pro1x
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ixgbevf: Set the netdev number of Tx queues

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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>
This commit is contained in:
Greg Rose 2012-10-03 00:57:23 +00:00 committed by Jeff Kirsher
parent 66eef59f22
commit 91e2b89b04
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
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@ -1747,6 +1747,7 @@ static int ixgbevf_alloc_queues(struct ixgbevf_adapter *adapter)
**/
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 @@ static int ixgbevf_set_interrupt_capability(struct ixgbevf_adapter *adapter)
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;
}