From 01f08d3fa5ae0cd8a2fc3c6e1112117a1f7f9768 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Mon, 3 Jun 2019 23:28:19 -0700
Subject: rfnoc: Add check_topology() API to nodes

This API lets blocks decide if their current topology is OK for them,
and make decisions based on their topology.
---
 host/lib/include/uhdlib/rfnoc/graph.hpp         |  7 +++++++
 host/lib/include/uhdlib/rfnoc/node_accessor.hpp | 11 +++++++++++
 2 files changed, 18 insertions(+)

(limited to 'host/lib/include/uhdlib/rfnoc')

diff --git a/host/lib/include/uhdlib/rfnoc/graph.hpp b/host/lib/include/uhdlib/rfnoc/graph.hpp
index 49dc62551..4b08b5842 100644
--- a/host/lib/include/uhdlib/rfnoc/graph.hpp
+++ b/host/lib/include/uhdlib/rfnoc/graph.hpp
@@ -236,6 +236,13 @@ private:
      */
     bool _assert_edge_props_consistent(rfnoc_graph_t::edge_descriptor edge);
 
+    /*! Query all blocks on their topology
+     *
+     * \throws uhd::runtime_error if any of the blocks doesn't like its
+     * configuration
+     */
+    void _check_topology();
+
     /**************************************************************************
      * Attributes
      *************************************************************************/
diff --git a/host/lib/include/uhdlib/rfnoc/node_accessor.hpp b/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
index 827c87dd2..3351c5531 100644
--- a/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
+++ b/host/lib/include/uhdlib/rfnoc/node_accessor.hpp
@@ -97,6 +97,17 @@ public:
     {
         node->receive_action(port_info, action);
     }
+
+    /*! Check topology for this block
+     *
+     * See node_t::check_topology() for details
+     */
+    bool check_topology(node_t* node,
+        const std::vector<size_t>& connected_inputs,
+        const std::vector<size_t>& connected_outputs)
+    {
+        return node->check_topology(connected_inputs, connected_outputs);
+    }
 };
 
 
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