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vmxnet3: Dont allocate extra MSI-x vectors 

In case of single tx and rx queues, three MSI-x vectors are allocated instead
of two. This patch fixes that.

Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shreyas Bhatewara 2011-01-14 15:00:03 +00:00 committed by David S. Miller
parent 83d0feffc5
commit 7e96fbf232
2 changed files with 5 additions and 5 deletions
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4
drivers/net/vmxnet3/vmxnet3_drv.c
View File

@ -2712,7 +2712,7 @@ vmxnet3_acquire_msix_vectors(struct vmxnet3_adapter *adapter,
break;
} else {
/* If fails to enable required number of MSI-x vectors
* try enabling 3 of them. One each for rx, tx and event
* try enabling minimum number of vectors required.
*/
vectors = vector_threshold;
printk(KERN_ERR "Failed to enable %d MSI-X for %s, try"
@ -2774,7 +2774,7 @@ vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
*/
if (err == VMXNET3_LINUX_MIN_MSIX_VECT) {
if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE
|| adapter->num_rx_queues != 2) {
|| adapter->num_rx_queues != 1) {
adapter->share_intr = VMXNET3_INTR_TXSHARE;
printk(KERN_ERR "Number of rx queues : 1\n");
adapter->num_rx_queues = 1;

6
drivers/net/vmxnet3/vmxnet3_int.h
View File

@ -68,10 +68,10 @@
/*
* Version numbers
*/
#define VMXNET3_DRIVER_VERSION_STRING "1.0.16.0-k"
#define VMXNET3_DRIVER_VERSION_STRING "1.0.25.0-k"
/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
#define VMXNET3_DRIVER_VERSION_NUM 0x01001000
#define VMXNET3_DRIVER_VERSION_NUM 0x01001900
#if defined(CONFIG_PCI_MSI)
/* RSS only makes sense if MSI-X is supported. */
@ -289,7 +289,7 @@ struct vmxnet3_rx_queue {
#define VMXNET3_LINUX_MAX_MSIX_VECT (VMXNET3_DEVICE_MAX_TX_QUEUES + \
VMXNET3_DEVICE_MAX_RX_QUEUES + 1)
#define VMXNET3_LINUX_MIN_MSIX_VECT 3 /* 1 for each : tx, rx and event */
#define VMXNET3_LINUX_MIN_MSIX_VECT 2 /* 1 for tx-rx pair and 1 for event */
struct vmxnet3_intr {