[PATCH RFC v2 03/13] hw/virtio: iova_tree_foreach wrapper

[Connor Kite <connorkite@gmail.com>]

Add a wrapper to vhost-iova-tree that calls iova_tree_foreach on the
underlying iova_map.  This provides a means to execute some function on
each node of the tree.

Signed-off-by: Connor Kite <connorkite@gmail.com>
---
 hw/virtio/vhost-iova-tree.c | 15 +++++++++++++++
 hw/virtio/vhost-iova-tree.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/hw/virtio/vhost-iova-tree.c b/hw/virtio/vhost-iova-tree.c
index fa4147b773..0a9b38b6f3 100644
--- a/hw/virtio/vhost-iova-tree.c
+++ b/hw/virtio/vhost-iova-tree.c
@@ -189,3 +189,18 @@ void vhost_iova_tree_remove_gpa(VhostIOVATree *iova_tree, DMAMap map)
     iova_tree_remove(iova_tree->gpa_iova_map, map);
     iova_tree_remove(iova_tree->iova_map, map);
 }
+
+
+/**
+ * Traverse through the iova tree in sorted order
+ *
+ * @tree: The VhostIOVATree
+ * @func: Function called at every node.  A true return value ends traversal
+ * @data: An argument passed to func
+ */
+void vhost_iova_tree_foreach(VhostIOVATree *tree,
+                             GTraverseFunc func,
+                             gpointer data)
+{
+    iova_tree_foreach(tree->iova_map, func, data);
+}
diff --git a/hw/virtio/vhost-iova-tree.h b/hw/virtio/vhost-iova-tree.h
index 08f63b61cd..c84fd652bd 100644
--- a/hw/virtio/vhost-iova-tree.h
+++ b/hw/virtio/vhost-iova-tree.h
@@ -29,5 +29,7 @@ const DMAMap *vhost_iova_tree_find_gpa(const VhostIOVATree *iova_tree,
 int vhost_iova_tree_map_alloc_gpa(VhostIOVATree *iova_tree, DMAMap *map,
                                   hwaddr taddr);
 void vhost_iova_tree_remove_gpa(VhostIOVATree *iova_tree, DMAMap map);
+void vhost_iova_tree_foreach(VhostIOVATree *tree, GTraverseFunc func,
+                               gpointer data);
 
 #endif

-- 
2.43.0