[PATCH v3 21/28] vhost: add VDUSE callback for IRQ injection

[Maxime Coquelin <maxime.coquelin@redhat.com>]

This patch implements the VDUSE callback for kicking
virtqueues.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
---
 lib/vhost/vduse.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/vhost/vduse.c b/lib/vhost/vduse.c
index 58c1b384a8..d39e39b9dc 100644
--- a/lib/vhost/vduse.c
+++ b/lib/vhost/vduse.c
@@ -42,6 +42,12 @@
 				(1ULL << VIRTIO_F_IN_ORDER) | \
 				(1ULL << VIRTIO_F_IOMMU_PLATFORM))
 
+static int
+vduse_inject_irq(struct virtio_net *dev, struct vhost_virtqueue *vq)
+{
+	return ioctl(dev->vduse_dev_fd, VDUSE_VQ_INJECT_IRQ, &vq->index);
+}
+
 static void
 vduse_iotlb_remove_notify(uint64_t addr, uint64_t offset, uint64_t size)
 {
@@ -106,6 +112,7 @@ vduse_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm __rte_unuse
 static struct vhost_backend_ops vduse_backend_ops = {
 	.iotlb_miss = vduse_iotlb_miss,
 	.iotlb_remove_notify = vduse_iotlb_remove_notify,
+	.inject_irq = vduse_inject_irq,
 };
 
 int
-- 
2.40.1