vmxnet3: Use single tx queue when CONFIG_PCI_MSI not defined

Resending this patch with few changes.

Avoid multiple queues when MSI or MSI-X not available

Limit number of Tx queues to 1 if MSI/MSI-X support is not configured in
the kernel. This will make number of tx and rx queues equal when MSI/X
is not configured thus providing better performance.

Signed-off-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index c0da23096160..fa6e2ac7475a 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2884,6 +2884,9 @@ vmxnet3_probe_device(struct pci_dev *pdev,
         int num_tx_queues;
         int num_rx_queues;
 
+        if (!pci_msi_enabled())
+                enable_mq = 0;
+
 #ifdef VMXNET3_RSS
         if (enable_mq)
                 num_rx_queues = min(VMXNET3_DEVICE_MAX_RX_QUEUES,