rfnoc: Add update_graph() API call

Blocks that change scaling, tick rate, or sampling rate can now notify
the graph to update streamers. Before, this was handled only by
mult_usrp, and only for DDC and DUC blocks.

1 files changed, 4 insertions, 0 deletions

diff --git a/host/lib/usrp/device3/device3_impl.cpp b/host/lib/usrp/device3/device3_impl.cpp
index d636b3338..ba88ed2e8 100644
--- a/host/lib/usrp/device3/device3_impl.cpp
+++ b/host/lib/usrp/device3/device3_impl.cpp
@@ -165,6 +165,10 @@ void device3_impl::enumerate_rfnoc_blocks(size_t device_index,
             boost::lock_guard<boost::mutex> lock(_block_ctrl_mutex);
             _rfnoc_block_ctrl.push_back(
                 uhd::rfnoc::block_ctrl_base::make(make_args, noc_id));
+            _rfnoc_block_ctrl.back()->set_graph_update_cb([this]() {
+                update_rx_streamers();
+                update_tx_streamers();
+            });
         }
     }
 }