return close(fd);
}
+static int vhost_kernel_get_vq_index(struct vhost_dev *dev, int idx)
+{
+ assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
+
+ return idx - dev->vq_index;
+}
+
static const VhostOps kernel_ops = {
.backend_type = VHOST_BACKEND_TYPE_KERNEL,
.vhost_call = vhost_kernel_call,
.vhost_backend_init = vhost_kernel_init,
- .vhost_backend_cleanup = vhost_kernel_cleanup
+ .vhost_backend_cleanup = vhost_kernel_cleanup,
+ .vhost_backend_get_vq_index = vhost_kernel_get_vq_index,
};
int vhost_set_backend_type(struct vhost_dev *dev, VhostBackendType backend_type)
return 0;
}
+static int vhost_user_get_vq_index(struct vhost_dev *dev, int idx)
+{
+ assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
+
+ return idx;
+}
+
const VhostOps user_ops = {
.backend_type = VHOST_BACKEND_TYPE_USER,
.vhost_call = vhost_user_call,
.vhost_backend_init = vhost_user_init,
- .vhost_backend_cleanup = vhost_user_cleanup
- };
+ .vhost_backend_cleanup = vhost_user_cleanup,
+ .vhost_backend_get_vq_index = vhost_user_get_vq_index,
+};
{
hwaddr s, l, a;
int r;
- int vhost_vq_index = idx - dev->vq_index;
+ int vhost_vq_index = dev->vhost_ops->vhost_backend_get_vq_index(dev, idx);
struct vhost_vring_file file = {
.index = vhost_vq_index
};
};
struct VirtQueue *vvq = virtio_get_queue(vdev, idx);
- assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
vq->num = state.num = virtio_queue_get_num(vdev, idx);
r = dev->vhost_ops->vhost_call(dev, VHOST_SET_VRING_NUM, &state);
struct vhost_virtqueue *vq,
unsigned idx)
{
- int vhost_vq_index = idx - dev->vq_index;
+ int vhost_vq_index = dev->vhost_ops->vhost_backend_get_vq_index(dev, idx);
struct vhost_vring_state state = {
.index = vhost_vq_index,
};
int r;
- assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
+
r = dev->vhost_ops->vhost_call(dev, VHOST_GET_VRING_BASE, &state);
if (r < 0) {
fprintf(stderr, "vhost VQ %d ring restore failed: %d\n", idx, r);
{
struct VirtQueue *vvq = virtio_get_queue(vdev, n);
int r, index = n - hdev->vq_index;
+ struct vhost_vring_file file;
- assert(n >= hdev->vq_index && n < hdev->vq_index + hdev->nvqs);
-
- struct vhost_vring_file file = {
- .index = index
- };
if (mask) {
file.fd = event_notifier_get_fd(&hdev->vqs[index].masked_notifier);
} else {
file.fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vvq));
}
+
+ file.index = hdev->vhost_ops->vhost_backend_get_vq_index(hdev, n);
r = hdev->vhost_ops->vhost_call(hdev, VHOST_SET_VRING_CALL, &file);
assert(r >= 0);
}
void *arg);
typedef int (*vhost_backend_init)(struct vhost_dev *dev, void *opaque);
typedef int (*vhost_backend_cleanup)(struct vhost_dev *dev);
+typedef int (*vhost_backend_get_vq_index)(struct vhost_dev *dev, int idx);
typedef struct VhostOps {
VhostBackendType backend_type;
vhost_call vhost_call;
vhost_backend_init vhost_backend_init;
vhost_backend_cleanup vhost_backend_cleanup;
+ vhost_backend_get_vq_index vhost_backend_get_vq_index;
} VhostOps;
extern const VhostOps user_ops;