[v3,1/3] net/virtio: register/unregister intr handler on start/stop
diff mbox series

Message ID 20181031183945.29509-1-bluca@debian.org
State Accepted, archived
Delegated to: Thomas Monjalon
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Series
  • [v3,1/3] net/virtio: register/unregister intr handler on start/stop
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Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation success Compilation OK

Commit Message

Luca Boccassi Oct. 31, 2018, 6:39 p.m. UTC
Register and unregister the virtio interrupt handler when the device is
started and stopped. This allows a virtio device to be hotplugged or
unplugged.

Fixes: c1f86306a026 ("virtio: add new driver")
Cc: stable@dpdk.org

Signed-off-by: Brian Russell <brussell@brocade.com>
Signed-off-by: Luca Boccassi <bluca@debian.org>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 drivers/net/virtio/virtio_ethdev.c | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

Comments

Thomas Monjalon Nov. 2, 2018, 9:49 a.m. UTC | #1
31/10/2018 19:39, Luca Boccassi:
> Register and unregister the virtio interrupt handler when the device is
> started and stopped. This allows a virtio device to be hotplugged or
> unplugged.
> 
> Fixes: c1f86306a026 ("virtio: add new driver")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Brian Russell <brussell@brocade.com>
> Signed-off-by: Luca Boccassi <bluca@debian.org>
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Series applied, thanks
Luca Boccassi Nov. 2, 2018, 11:14 a.m. UTC | #2
On Fri, 2018-11-02 at 10:49 +0100, Thomas Monjalon wrote:
> 31/10/2018 19:39, Luca Boccassi:
> > Register and unregister the virtio interrupt handler when the
> > device is
> > started and stopped. This allows a virtio device to be hotplugged
> > or
> > unplugged.
> > 
> > Fixes: c1f86306a026 ("virtio: add new driver")
> > Cc: stable@dpdk.org
> > 
> > Signed-off-by: Brian Russell <brussell@brocade.com>
> > Signed-off-by: Luca Boccassi <bluca@debian.org>
> > Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> 
> Series applied, thanks

Thanks!

Patch
diff mbox series

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 10a7e3fcc..da8717726 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1679,11 +1679,6 @@  eth_virtio_dev_init(struct rte_eth_dev *eth_dev)
 	if (ret < 0)
 		goto out;
 
-	/* Setup interrupt callback  */
-	if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
-		rte_intr_callback_register(eth_dev->intr_handle,
-			virtio_interrupt_handler, eth_dev);
-
 	return 0;
 
 out:
@@ -1706,11 +1701,6 @@  eth_virtio_dev_uninit(struct rte_eth_dev *eth_dev)
 	eth_dev->tx_pkt_burst = NULL;
 	eth_dev->rx_pkt_burst = NULL;
 
-	/* reset interrupt callback  */
-	if (eth_dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
-		rte_intr_callback_unregister(eth_dev->intr_handle,
-						virtio_interrupt_handler,
-						eth_dev);
 	if (eth_dev->device)
 		rte_pci_unmap_device(RTE_ETH_DEV_TO_PCI(eth_dev));
 
@@ -1969,6 +1959,12 @@  virtio_dev_start(struct rte_eth_dev *dev)
 	    dev->data->dev_conf.intr_conf.rxq) {
 		virtio_intr_disable(dev);
 
+		/* Setup interrupt callback  */
+		if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
+			rte_intr_callback_register(dev->intr_handle,
+						   virtio_interrupt_handler,
+						   dev);
+
 		if (virtio_intr_enable(dev) < 0) {
 			PMD_DRV_LOG(ERR, "interrupt enable failed");
 			return -EIO;
@@ -2078,9 +2074,17 @@  virtio_dev_stop(struct rte_eth_dev *dev)
 	PMD_INIT_LOG(DEBUG, "stop");
 
 	rte_spinlock_lock(&hw->state_lock);
-	if (intr_conf->lsc || intr_conf->rxq)
+	if (intr_conf->lsc || intr_conf->rxq) {
 		virtio_intr_disable(dev);
 
+		/* Reset interrupt callback  */
+		if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC) {
+			rte_intr_callback_unregister(dev->intr_handle,
+						     virtio_interrupt_handler,
+						     dev);
+		}
+	}
+
 	hw->started = 0;
 	memset(&link, 0, sizeof(link));
 	rte_eth_linkstatus_set(dev, &link);