[dpdk-dev] [PATCH] net/virtio: fix fail to configure rxq interrupt

[Jiayu Hu <jiayu.hu@intel.com>]

When use rte_eth_dev_configure() to enable rx queue interrupt for virtio
devices, virtio_configure_intr() isn't called to set up the interrupt
environment, which causes rx queue interrupt setup failed. This patch is
to fix this issue.

Fixes: 26b683b4f7d0 ("net/virtio: setup Rx queue interrupts")
Cc: stable@dpdk.org

Signed-off-by: Jiayu Hu <jiayu.hu@intel.com>
---
 drivers/net/virtio/virtio_ethdev.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 00a3122..66656ed 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1688,6 +1688,13 @@ virtio_dev_configure(struct rte_eth_dev *dev)
 		return -ENOTSUP;
 	}
 
+	if (dev->data->dev_conf.intr_conf.rxq) {
+		if (virtio_configure_intr(dev) < 0) {
+			PMD_DRV_LOG(ERR, "failed to configure interrupt");
+			return -ENOTSUP;
+		}
+	}
+
 	if (dev->data->dev_flags & RTE_ETH_DEV_INTR_LSC)
 		/* Enable vector (0) for Link State Intrerrupt */
 		if (VTPCI_OPS(hw)->set_config_irq(hw, 0) ==
-- 
2.7.4