When virtio devices get stopped, tell the kernel to unbind the
mapping between interrupts and eventfds.
Note: it behaves differently from other NICs which close eventfds,
free struct. In virtio, we do those things when close device in
following patch.
Signed-off-by: Jianfeng Tan <jianfeng....@intel.com>
---
drivers/net/virtio/virtio_ethdev.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/net/virtio/virtio_ethdev.c
b/drivers/net/virtio/virtio_ethdev.c
index e870125..5030ed5 100644
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -1652,6 +1652,15 @@ virtio_dev_start(struct rte_eth_dev *dev)
PMD_DRV_LOG(ERR, "link status not supported by host");
return -ENOTSUP;
}
+ }
+
+ /* Enable uio/vfio intr/eventfd mapping: althrough we already did that
+ * in device configure, but it could be unmapped when device is
+ * stopped.
+ */
+ if (dev->data->dev_conf.intr_conf.lsc ||
+ dev->data->dev_conf.intr_conf.rxq) {
+ rte_intr_disable(dev->intr_handle);
if (rte_intr_enable(dev->intr_handle) < 0) {
PMD_DRV_LOG(ERR, "interrupt enable failed");
@@ -1746,10 +1755,11 @@ static void
virtio_dev_stop(struct rte_eth_dev *dev)
{
struct rte_eth_link link;
+ struct rte_intr_conf *intr_conf = &dev->data->dev_conf.intr_conf;
PMD_INIT_LOG(DEBUG, "stop");
- if (dev->data->dev_conf.intr_conf.lsc)
+ if (intr_conf->lsc || intr_conf->rxq)
rte_intr_disable(dev->intr_handle);
memset(&link, 0, sizeof(link));
--
2.7.4
