This allows external parts of SVQ to forward custom buffers to the
device.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 hw/virtio/vhost-shadow-virtqueue.h | 3 +++
 hw/virtio/vhost-shadow-virtqueue.c | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/hw/virtio/vhost-shadow-virtqueue.h b/hw/virtio/vhost-shadow-virtqueue.h
index 69b352c707..1692541cbb 100644
--- a/hw/virtio/vhost-shadow-virtqueue.h
+++ b/hw/virtio/vhost-shadow-virtqueue.h
@@ -86,6 +86,9 @@ bool vhost_svq_valid_features(uint64_t features, Error **errp);
 
 void vhost_svq_push_elem(VhostShadowVirtqueue *svq, const SVQElement *elem,
                          uint32_t len);
+int vhost_svq_add(VhostShadowVirtqueue *svq, const struct iovec *out_sg,
+                  size_t out_num, const struct iovec *in_sg, size_t in_num,
+                  SVQElement *elem);
 
 void vhost_svq_set_svq_kick_fd(VhostShadowVirtqueue *svq, int svq_kick_fd);
 void vhost_svq_set_svq_call_fd(VhostShadowVirtqueue *svq, int call_fd);
diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c
index 95a8ab8477..5244896358 100644
--- a/hw/virtio/vhost-shadow-virtqueue.c
+++ b/hw/virtio/vhost-shadow-virtqueue.c
@@ -238,9 +238,9 @@ static void vhost_svq_kick(VhostShadowVirtqueue *svq)
  *
  * Return -EINVAL if element is invalid, -ENOSPC if dev queue is full
  */
-static int vhost_svq_add(VhostShadowVirtqueue *svq, const struct iovec *out_sg,
-                          size_t out_num, const struct iovec *in_sg,
-                          size_t in_num, SVQElement *svq_elem)
+int vhost_svq_add(VhostShadowVirtqueue *svq, const struct iovec *out_sg,
+                  size_t out_num, const struct iovec *in_sg, size_t in_num,
+                  SVQElement *svq_elem)
 {
     unsigned qemu_head;
     svq_elem->ndescs = in_num + out_num;
-- 
2.31.1