VIRTQUEUE_READ_DESC_MORE = 1, /* more buffers in chain */
};
+/* Reads the 'desc->next' descriptor into '*desc'. */
static int virtqueue_split_read_next_desc(VirtIODevice *vdev, VRingDesc *desc,
MemoryRegionCache *desc_cache,
- unsigned int max, unsigned int *next)
+ unsigned int max)
{
/* If this descriptor says it doesn't chain, we're done. */
if (!(desc->flags & VRING_DESC_F_NEXT)) {
}
/* Check they're not leading us off end of descriptors. */
- *next = desc->next;
-
- if (*next >= max) {
- virtio_error(vdev, "Desc next is %u", *next);
+ if (desc->next >= max) {
+ virtio_error(vdev, "Desc next is %u", desc->next);
return VIRTQUEUE_READ_DESC_ERROR;
}
- vring_split_desc_read(vdev, desc, desc_cache, *next);
+ vring_split_desc_read(vdev, desc, desc_cache, desc->next);
return VIRTQUEUE_READ_DESC_MORE;
}
goto done;
}
- rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max, &i);
+ rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
if (rc == VIRTQUEUE_READ_DESC_ERROR) {
goto err_undo_map;
}
- rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max, &i);
+ rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
if (rc == VIRTQUEUE_READ_DESC_ERROR) {
list = node;
ndescs++;
- rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache,
- max, &i);
+ rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
element->descs = list;
done: