Hi Sergei,
Thanks for the review. I have addressed all the review comments and
resubmitted the patch.
Thanks,
Shri
On Wed, 7 Jan 2015, Sergei Shtylyov wrote:
> Hello.
>
> On 01/07/2015 08:56 PM, Shrikrishna Khare wrote:
>
> > Failing to reinitialize on wakeup results in loss of network connectivity
> > for
> > vmxnet3 interface.
>
> > Signed-off-by: Srividya Murali <smur...@vmware.com>
> > Signed-off-by: Shrikrishna Khare <skh...@vmware.com>
> > Reviewed-by: Shreyas N Bhatewara <sbhatew...@vmware.com>
> > ---
> > drivers/net/vmxnet3/vmxnet3_drv.c | 50
> > +++++++++++++++++++++---------------
> > drivers/net/vmxnet3/vmxnet3_int.h | 4 +-
> > 2 files changed, 31 insertions(+), 23 deletions(-)
>
> > diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c
> > b/drivers/net/vmxnet3/vmxnet3_drv.c
> > index 7af1f5c..124cb9f 100644
> > --- a/drivers/net/vmxnet3/vmxnet3_drv.c
> > +++ b/drivers/net/vmxnet3/vmxnet3_drv.c
> > @@ -3290,51 +3290,59 @@ skip_arp:
> > static int
> > vmxnet3_resume(struct device *device)
> > {
> > - int err, i = 0;
> > + int err;
> > unsigned long flags;
> > struct pci_dev *pdev = to_pci_dev(device);
> > struct net_device *netdev = pci_get_drvdata(pdev);
> > struct vmxnet3_adapter *adapter = netdev_priv(netdev);
> > - struct Vmxnet3_PMConf *pmConf;
> >
> > if (!netif_running(netdev))
> > 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_restore_state(pdev);
> > err = pci_enable_device_mem(pdev);
> > if (err != 0)
> > - return err;
> > + goto err;
>
> Why?
>
> >
> > 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);
> > VMXNET3_WRITE_BAR1_REG(adapter, VMXNET3_REG_CMD,
> > - VMXNET3_CMD_UPDATE_PMCFG);
> > + VMXNET3_CMD_QUIESCE_DEV);
> > spin_unlock_irqrestore(&adapter->cmd_lock, flags);
> > - vmxnet3_alloc_intr_resources(adapter);
> > - vmxnet3_request_irqs(adapter);
> > - for (i = 0; i < adapter->num_rx_queues; i++)
> > - napi_enable(&adapter->rx_queue[i].napi);
> > - vmxnet3_enable_all_intrs(adapter);
> > + vmxnet3_tq_cleanup_all(adapter);
> > + vmxnet3_rq_cleanup_all(adapter);
> >
> > - return 0;
> > + vmxnet3_reset_dev(adapter);
> > + err = vmxnet3_activate_dev(adapter);
> > + if (err) {
> > + netdev_err(adapter->netdev,
>
> Not just 'netdev'?
>
> > + "%s: failed to re-activate on resume, error: %d",
> > + netdev->name, err);
>
> Should have been aligned with the line right above. And isn't netdev->name
> printed by netdev_err() already?
>
> > + vmxnet3_force_close(adapter);
> > + goto err;
>
> Why not just *return*?
>
> > + }
> > + netif_device_attach(netdev);
> > +
> > +err:
> > + return err;
> > }
> [...]
>
> WBR, Sergei
>
>
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