From: Your Name <you@xxxxxxxxxxx>
in VDUSE_VQ_GET_INFO, driver will sync the last_avail_idx
with reconnect info, I have olny test the split mode, so
only use this here, will add more information later
Signed-off-by: Cindy Lu <lulu@xxxxxxxxxx>
---
drivers/vdpa/vdpa_user/vduse_dev.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c
index 3df1256eccb4..b8e453eac0ce 100644
--- a/drivers/vdpa/vdpa_user/vduse_dev.c
+++ b/drivers/vdpa/vdpa_user/vduse_dev.c
@@ -141,6 +141,11 @@ static u32 allowed_device_id[] = {
VIRTIO_ID_NET,
};
+struct vhost_reconnect_vring {
+ uint16_t last_avail_idx;
+ bool avail_wrap_counter;
+};
+
static inline struct vduse_dev *vdpa_to_vduse(struct vdpa_device *vdpa)
{
struct vduse_vdpa *vdev = container_of(vdpa, struct vduse_vdpa, vdpa);
@@ -1176,6 +1181,17 @@ static long vduse_dev_ioctl(struct file *file, unsigned int cmd,
vq->state.split.avail_index;
vq_info.ready = vq->ready;
+ struct vdpa_reconnect_info *area;
+
+ area = &dev->reconnect_info[index];
+ struct vhost_reconnect_vring *log_reconnect;
+
+ log_reconnect = (struct vhost_reconnect_vring *)area->vaddr;
+ if (log_reconnect->last_avail_idx !=
+ vq_info.split.avail_index) {
+ vq_info.split.avail_index =
+ log_reconnect->last_avail_idx;
+ }
ret = -EFAULT;
if (copy_to_user(argp, &vq_info, sizeof(vq_info)))
--
2.34.3
