Patchwork [RFC,v2,28/29] vmxnet3: Limit number of rx queues to 1 if per-queue MSI-Xs failed

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Submitter Alexander Gordeev
Date Oct. 18, 2013, 5:12 p.m.
Message ID <48b60dd6eda8df93f1eb8e8356e3c80c673550e3.1382103786.git.agordeev@redhat.com>
Download mbox | patch
Permalink /patch/284830/
State Superseded
Headers show

Comments

Alexander Gordeev - Oct. 18, 2013, 5:12 p.m.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
 drivers/net/vmxnet3/vmxnet3_drv.c |   18 ++++++++----------
 1 files changed, 8 insertions(+), 10 deletions(-)

Patch

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 3df7f32..d33802c 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2814,23 +2814,21 @@  vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
 
 		err = vmxnet3_acquire_msix_vectors(adapter,
 						   adapter->intr.num_intrs);
-		/* If we cannot allocate one MSIx vector per queue
-		 * then limit the number of rx queues to 1
-		 */
-		if (err == VMXNET3_LINUX_MIN_MSIX_VECT) {
-			if (adapter->share_intr != VMXNET3_INTR_BUDDYSHARE
-			    || adapter->num_rx_queues != 1) {
+		if (!err) {
+			/* If we cannot allocate one MSIx vector per queue
+			 * then limit the number of rx queues to 1
+			 */
+			if ((adapter->intr.num_intrs ==
+			     VMXNET3_LINUX_MIN_MSIX_VECT) &&
+			    ((adapter->share_intr != VMXNET3_INTR_BUDDYSHARE) ||
+			     (adapter->num_rx_queues != 1))) {
 				adapter->share_intr = VMXNET3_INTR_TXSHARE;
 				netdev_err(adapter->netdev,
 					   "Number of rx queues : 1\n");
 				adapter->num_rx_queues = 1;
-				adapter->intr.num_intrs =
-						VMXNET3_LINUX_MIN_MSIX_VECT;
 			}
 			return;
 		}
-		if (!err)
-			return;
 
 		/* If we cannot allocate MSIx vectors use only one rx queue */
 		dev_info(&adapter->pdev->dev,