[RFC PATCH v2 11/18] vhost: Add vhost_iova_tree_find

["Eugenio Pérez" <eperezma@redhat.com>]

Just a simple wrapper so we can find DMAMap entries based on iova

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
---
 hw/virtio/vhost-iova-tree.h |  2 ++
 hw/virtio/vhost-iova-tree.c | 14 ++++++++++++++
 2 files changed, 16 insertions(+)

diff --git a/hw/virtio/vhost-iova-tree.h b/hw/virtio/vhost-iova-tree.h
index 6a4f24e0f9..1ffcdc5b57 100644
--- a/hw/virtio/vhost-iova-tree.h
+++ b/hw/virtio/vhost-iova-tree.h
@@ -19,6 +19,8 @@ VhostIOVATree *vhost_iova_tree_new(uint64_t iova_first, uint64_t iova_last);
 void vhost_iova_tree_delete(VhostIOVATree *iova_tree);
 G_DEFINE_AUTOPTR_CLEANUP_FUNC(VhostIOVATree, vhost_iova_tree_delete);
 
+const DMAMap *vhost_iova_tree_find(const VhostIOVATree *iova_tree,
+                                   const DMAMap *map);
 const DMAMap *vhost_iova_tree_find_iova(const VhostIOVATree *iova_tree,
                                         const DMAMap *map);
 int vhost_iova_tree_map_alloc(VhostIOVATree *iova_tree, DMAMap *map);
diff --git a/hw/virtio/vhost-iova-tree.c b/hw/virtio/vhost-iova-tree.c
index 55fed1fefb..7d4e8ac499 100644
--- a/hw/virtio/vhost-iova-tree.c
+++ b/hw/virtio/vhost-iova-tree.c
@@ -56,6 +56,20 @@ void vhost_iova_tree_delete(VhostIOVATree *iova_tree)
     g_free(iova_tree);
 }
 
+/**
+ * Find a mapping in the tree that matches map
+ *
+ * @iova_tree  The iova tree
+ * @map        The map
+ *
+ * Return a matching map that contains argument map or NULL
+ */
+const DMAMap *vhost_iova_tree_find(const VhostIOVATree *iova_tree,
+                                   const DMAMap *map)
+{
+    return iova_tree_find(iova_tree->iova_taddr_map, map);
+}
+
 /**
  * Find the IOVA address stored from a memory address
  *
-- 
2.27.0