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SubjectRe: [PATCH net-next] 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>

---
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c
b/drivers/net/vmxnet3/vmxnet3_drv.c
index 7a494f7..ab2e753 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2882,6 +2882,9 @@ 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,
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index 8ba7b5f..f50d36f 100644
--- a/drivers/net/vmxnet3/vmxnet3_int.h
+++ b/drivers/net/vmxnet3/vmxnet3_int.h
@@ -68,10 +68,10 @@
/*
* Version numbers
*/
-#define VMXNET3_DRIVER_VERSION_STRING "1.0.25.0-k"
+#define VMXNET3_DRIVER_VERSION_STRING "1.1.9.0-k"

/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
-#define VMXNET3_DRIVER_VERSION_NUM 0x01001900
+#define VMXNET3_DRIVER_VERSION_NUM 0x01010900

#if defined(CONFIG_PCI_MSI)
/* RSS only makes sense if MSI-X is supported. */

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