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Driver: Vmxnet3: Reinitialize vmxnet3 backend on wakeup from hibernate

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Failing to reinitialize on wakeup results in loss of network connectivity for
vmxnet3 interface.

Signed-off-by: Srividya Murali <smurali@vmware.com>
Signed-off-by: Shrikrishna Khare <skhare@vmware.com>
Reviewed-by: Shreyas N Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shrikrishna Khare 2015-01-09 15:19:14 -08:00 • committed by David S. Miller
parent 7bfa014500
commit 5ec82c1e4c
2 changed files with 27 additions and 21 deletions
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44
drivers/net/vmxnet3/vmxnet3_drv.c
View file

@ -3290,27 +3290,15 @@ skip_arp:
static int static int
vmxnet3_resume(struct device *device) vmxnet3_resume(struct device *device)
{ {
int err, i = 0; int err;
unsigned long flags; unsigned long flags;
struct pci_dev *pdev = to_pci_dev(device); struct pci_dev *pdev = to_pci_dev(device);
struct net_device *netdev = pci_get_drvdata(pdev); struct net_device *netdev = pci_get_drvdata(pdev);
struct vmxnet3_adapter *adapter = netdev_priv(netdev); struct vmxnet3_adapter *adapter = netdev_priv(netdev);
struct Vmxnet3_PMConf *pmConf;
if (!netif_running(netdev)) if (!netif_running(netdev))
return 0; return 0;
/* Destroy wake-up filters. */
pmConf = adapter->pm_conf;
memset(pmConf, 0, sizeof(*pmConf));
adapter->shared->devRead.pmConfDesc.confVer = cpu_to_le32(1);
adapter->shared->devRead.pmConfDesc.confLen = cpu_to_le32(sizeof(
*pmConf));
adapter->shared->devRead.pmConfDesc.confPA =
cpu_to_le64(adapter->pm_conf_pa);
netif_device_attach(netdev);
pci_set_power_state(pdev, PCI_D0); pci_set_power_state(pdev, PCI_D0);
pci_restore_state(pdev); pci_restore_state(pdev);
err = pci_enable_device_mem(pdev); err = pci_enable_device_mem(pdev);
@ -3319,15 +3307,31 @@ vmxnet3_resume(struct device *device)
pci_enable_wake(pdev, PCI_D0, 0); pci_enable_wake(pdev, PCI_D0, 0);
vmxnet3_alloc_intr_resources(adapter);
/* During hibernate and suspend, device has to be reinitialized as the
* device state need not be preserved.
*/
/* Need not check adapter state as other reset tasks cannot run during
* device resume.
*/
spin_lock_irqsave(&adapter->cmd_lock, flags); spin_lock_irqsave(&adapter->cmd_lock, flags);
VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD, VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
VMXNET3_CMD_UPDATE_PMCFG); VMXNET3_CMD_QUIESCE_DEV);
spin_unlock_irqrestore(&adapter->cmd_lock, flags); spin_unlock_irqrestore(&adapter->cmd_lock, flags);
vmxnet3_alloc_intr_resources(adapter); vmxnet3_tq_cleanup_all(adapter);
vmxnet3_request_irqs(adapter); vmxnet3_rq_cleanup_all(adapter);
for (i = 0; i < adapter->num_rx_queues; i++)
napi_enable(&adapter->rx_queue[i].napi); vmxnet3_reset_dev(adapter);
vmxnet3_enable_all_intrs(adapter); err = vmxnet3_activate_dev(adapter);
if (err != 0) {
netdev_err(netdev,
"failed to re-activate on resume, error: %d", err);
vmxnet3_force_close(adapter);
return err;
}
netif_device_attach(netdev);
return 0; return 0;
} }
@ -3335,6 +3339,8 @@ vmxnet3_resume(struct device *device)
static const struct dev_pm_ops vmxnet3_pm_ops = { static const struct dev_pm_ops vmxnet3_pm_ops = {
.suspend = vmxnet3_suspend, .suspend = vmxnet3_suspend,
.resume = vmxnet3_resume, .resume = vmxnet3_resume,
.freeze = vmxnet3_suspend,
.restore = vmxnet3_resume,
}; };
#endif #endif

4
drivers/net/vmxnet3/vmxnet3_int.h
View file

@ -69,10 +69,10 @@
/* /*
* Version numbers * Version numbers
*/ */
#define VMXNET3_DRIVER_VERSION_STRING "1.3.1.0-k" #define VMXNET3_DRIVER_VERSION_STRING "1.3.2.0-k"
/* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */ /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */
#define VMXNET3_DRIVER_VERSION_NUM 0x01030100 #define VMXNET3_DRIVER_VERSION_NUM 0x01030200
#if defined(CONFIG_PCI_MSI) #if defined(CONFIG_PCI_MSI)
/* RSS only makes sense if MSI-X is supported. */ /* RSS only makes sense if MSI-X is supported. */