CC Thomas.
--yliu
On Thu, Feb 04, 2016 at 01:29:19PM +0300, Pavel Fedin wrote:
> Hello! Are there any news about this patch? We have got this problem for the
> second time, it reproduces every time we try to use
> ovs-dpdk inside virtual machine with virtio-net adapter.
>
> Kind regards,
> Pavel Fedin
> Senior Engineer
> Samsung Electronics Research center Russia
>
>
> > -----Original Message-----
> > From: Jianfeng Tan [mailto:jianfeng.tan at intel.com]
> > Sent: Monday, January 11, 2016 9:16 AM
> > To: dev at dpdk.org
> > Cc: p.fedin at samsung.com; yuanhan.liu at linux.intel.com; Jianfeng Tan
> > Subject: [PATCH v2] pmd/virtio: fix cannot start virtio dev after stop
> >
> > v2 changes:
> > - Address compiling error.
> > - Add Reported-by.
> >
> > Fix the issue that virtio device cannot be started after stopped.
> >
> > The field, hw->started, should be changed by virtio_dev_start/stop instead
> > of virtio_dev_close.
> >
> > Reported-by: Pavel Fedin <p.fedin at samsung.com>
> > Signed-off-by: Jianfeng Tan <jianfeng.tan at intel.com>
> > Acked-by: Yuanhan Liu <yuanhan.liu at linux.intel.com>
> >
> > ---
> > drivers/net/virtio/virtio_ethdev.c | 14 +++++++++-----
> > 1 file changed, 9 insertions(+), 5 deletions(-)
> >
> > diff --git a/drivers/net/virtio/virtio_ethdev.c
> > b/drivers/net/virtio/virtio_ethdev.c
> > index d928339..5bdd305 100644
> > --- a/drivers/net/virtio/virtio_ethdev.c
> > +++ b/drivers/net/virtio/virtio_ethdev.c
> > @@ -490,11 +490,13 @@ virtio_dev_close(struct rte_eth_dev *dev)
> >
> > PMD_INIT_LOG(DEBUG, "virtio_dev_close");
> >
> > + if (hw->started == 1)
> > + virtio_dev_stop(dev);
> > +
> > /* reset the NIC */
> > if (pci_dev->driver->drv_flags & RTE_PCI_DRV_INTR_LSC)
> > vtpci_irq_config(hw, VIRTIO_MSI_NO_VECTOR);
> > vtpci_reset(hw);
> > - hw->started = 0;
> > virtio_dev_free_mbufs(dev);
> > virtio_free_queues(dev);
> > }
> > @@ -1408,10 +1410,9 @@ eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
> > if (rte_eal_process_type() == RTE_PROC_SECONDARY)
> > return -EPERM;
> >
> > - if (hw->started == 1) {
> > - virtio_dev_stop(eth_dev);
> > - virtio_dev_close(eth_dev);
> > - }
> > + /* Close it anyway since there's no way to know if closed */
> > + virtio_dev_close(eth_dev);
> > +
> > pci_dev = eth_dev->pci_dev;
> >
> > eth_dev->dev_ops = NULL;
> > @@ -1612,9 +1613,12 @@ static void
> > virtio_dev_stop(struct rte_eth_dev *dev)
> > {
> > struct rte_eth_link link;
> > + struct virtio_hw *hw = dev->data->dev_private;
> >
> > PMD_INIT_LOG(DEBUG, "stop");
> >
> > + hw->started = 0;
> > +
> > if (dev->data->dev_conf.intr_conf.lsc)
> > rte_intr_disable(&dev->pci_dev->intr_handle);
> >
> > --
> > 2.1.4
>
