diff mbox series

[net-next,3/7] vmxnet3: remove power of 2 limitation on the queues

Message ID 20210716223626.18928-4-doshir@vmware.com (mailing list archive)
State Accepted
Commit 15ccf2f4b09c4443435e815b8086bc161da27e24
Delegated to: Netdev Maintainers
Headers show
Series vmxnet3: upgrade to version 6 | expand

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netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 14 this patch: 14
netdev/kdoc success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 32 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 14 this patch: 14
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Commit Message

Ronak Doshi July 16, 2021, 10:36 p.m. UTC 
With version 6, vmxnet3 relaxes the restriction on queues to
be power of two. This is helpful in cases (Edge VM) where
vcpus are less than 8 and device requires more than 4 queues.

Signed-off-by: Ronak Doshi <doshir@vmware.com>
Acked-by: Guolin Yang <gyang@vmware.com>
---
 drivers/net/vmxnet3/vmxnet3_drv.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index d32fa6f3ae57..41e694d13c92 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -3399,7 +3399,6 @@  vmxnet3_probe_device(struct pci_dev *pdev,
 	else
 #endif
 		num_rx_queues = 1;
-	num_rx_queues = rounddown_pow_of_two(num_rx_queues);
 
 	if (enable_mq)
 		num_tx_queues = min(VMXNET3_DEVICE_MAX_TX_QUEUES,
@@ -3407,7 +3406,6 @@  vmxnet3_probe_device(struct pci_dev *pdev,
 	else
 		num_tx_queues = 1;
 
-	num_tx_queues = rounddown_pow_of_two(num_tx_queues);
 	netdev = alloc_etherdev_mq(sizeof(struct vmxnet3_adapter),
 				   max(num_tx_queues, num_rx_queues));
 	if (!netdev)
@@ -3525,6 +3523,8 @@  vmxnet3_probe_device(struct pci_dev *pdev,
 		}
 	} else {
 		adapter->queuesExtEnabled = false;
+		num_rx_queues = rounddown_pow_of_two(num_rx_queues);
+		num_tx_queues = rounddown_pow_of_two(num_tx_queues);
 		adapter->num_rx_queues = min(num_rx_queues,
 					     VMXNET3_DEVICE_DEFAULT_RX_QUEUES);
 		adapter->num_tx_queues = min(num_tx_queues,
@@ -3705,7 +3705,9 @@  vmxnet3_remove_device(struct pci_dev *pdev)
 	else
 #endif
 		num_rx_queues = 1;
-	num_rx_queues = rounddown_pow_of_two(num_rx_queues);
+	if (!VMXNET3_VERSION_GE_6(adapter)) {
+		num_rx_queues = rounddown_pow_of_two(num_rx_queues);
+	}
 	if (VMXNET3_VERSION_GE_6(adapter)) {
 		spin_lock_irqsave(&adapter->cmd_lock, flags);
 		VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,