diff mbox

[2.6.35-rc1] net-next: vmxnet3 fixes [5/5] Respect the interrupt type in VM configuration

Message ID alpine.LRH.2.00.1007131750060.32055@localhost.localdomain
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Shreyas Bhatewara July 14, 2010, 12:51 a.m. UTC
Do not ignore interrupt type in VM configuration

When interrupt type is not auto, do not ignore the interrupt type set from
VM configuration.
Driver may not always respect the interrupt type in configuration but it 
will certainly try to. Eg: if MSIx is configured and enabling MSIx fails 
in driver, it fall back on MSI and then on INTx.

Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>

---

 drivers/net/vmxnet3/vmxnet3_drv.c     |   13 ++++++++++---
 drivers/net/vmxnet3/vmxnet3_ethtool.c |    2 +-
 drivers/net/vmxnet3/vmxnet3_int.h     |    6 +++---
 3 files changed, 14 insertions(+), 7 deletions(-)


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Comments

David Miller July 14, 2010, 9:11 p.m. UTC | #1
From: Shreyas Bhatewara <sbhatewara@vmware.com>
Date: Tue, 13 Jul 2010 17:51:39 -0700 (PDT)

> 
> Do not ignore interrupt type in VM configuration
> 
> When interrupt type is not auto, do not ignore the interrupt type set from
> VM configuration.
> Driver may not always respect the interrupt type in configuration but it 
> will certainly try to. Eg: if MSIx is configured and enabling MSIx fails 
> in driver, it fall back on MSI and then on INTx.
> 
> Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>
 ...
> @@ -291,7 +291,7 @@ vmxnet3_set_flags(struct net_device *netdev, u32 data)
>  
>  		/* update harware LRO capability accordingly */
>  		if (lro_requested)
> -			adapter->shared->devRead.misc.uptFeatures &= UPT1_F_LRO;
> +			adapter->shared->devRead.misc.uptFeatures |= UPT1_F_LRO;
>  		else

This change has nothing to do with respecting the VM interrupt setting.

Do not stuff unrelated changes into a commit.

I have to be frank with you, this patch series... it stinks.

It papers over races with incorrect tests, unrelated changes are mixed
together, it fixes RX ring exhaustion incorrectly, it illegals starts a
transmit queue before the device is every brought up, etc.
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diff mbox

Patch

diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index ffd6a9b..74fe3f0 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -2355,9 +2355,13 @@  vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
 	adapter->intr.mask_mode = (cfg >> 2) & 0x3;
 
 	if (adapter->intr.type == VMXNET3_IT_AUTO) {
-		int err;
+		adapter->intr.type = VMXNET3_IT_MSIX;
+	}
 
 #ifdef CONFIG_PCI_MSI
+	if (adapter->intr.type == VMXNET3_IT_MSIX) {
+		int err;
+
 		adapter->intr.msix_entries[0].entry = 0;
 		err = pci_enable_msix(adapter->pdev, adapter->intr.msix_entries,
 				      VMXNET3_LINUX_MAX_MSIX_VECT);
@@ -2366,15 +2370,18 @@  vmxnet3_alloc_intr_resources(struct vmxnet3_adapter *adapter)
 			adapter->intr.type = VMXNET3_IT_MSIX;
 			return;
 		}
-#endif
+		adapter->intr.type = VMXNET3_IT_MSI;
+	}
 
+	if (adapter->intr.type == VMXNET3_IT_MSI) {
+		int err;
 		err = pci_enable_msi(adapter->pdev);
 		if (!err) {
 			adapter->intr.num_intrs = 1;
-			adapter->intr.type = VMXNET3_IT_MSI;
 			return;
 		}
 	}
+#endif /* CONFIG_PCI_MSI */
 
 	adapter->intr.type = VMXNET3_IT_INTX;
 
diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c
index de1ba14..52128c7 100644
--- a/drivers/net/vmxnet3/vmxnet3_ethtool.c
+++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c
@@ -291,7 +291,7 @@  vmxnet3_set_flags(struct net_device *netdev, u32 data)
 
 		/* update harware LRO capability accordingly */
 		if (lro_requested)
-			adapter->shared->devRead.misc.uptFeatures &= UPT1_F_LRO;
+			adapter->shared->devRead.misc.uptFeatures |= UPT1_F_LRO;
 		else
 			adapter->shared->devRead.misc.uptFeatures &=
 								~UPT1_F_LRO;
diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h
index bbed330..d17fae6 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   "1.0.5.0-k"
+#define VMXNET3_DRIVER_VERSION_STRING   "1.0.13.0-k"
 
 /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
-#define VMXNET3_DRIVER_VERSION_NUM      0x01000500
+#define VMXNET3_DRIVER_VERSION_NUM      0x01000B00
 
 
 /*
@@ -150,7 +150,7 @@  vmxnet3_cmd_ring_desc_avail(struct vmxnet3_cmd_ring *ring)
 }
 
 static inline bool
-vmxnet3_cmd_ring_desc_empty(struct vmxnet3_cmd_ring *ring)
+vmxnet3_cmd_ring_desc_empty(const struct vmxnet3_cmd_ring *ring)
 {
 	return (ring->next2comp == ring->next2fill);
 }