2 files changed, 23 insertions, 2 deletions
diff --git a/host/include/uhd/rfnoc/actions.hpp b/host/include/uhd/rfnoc/actions.hpp
index b713bbed3..7326cfd6d 100644
--- a/host/include/uhd/rfnoc/actions.hpp
+++ b/host/include/uhd/rfnoc/actions.hpp
@@ -78,7 +78,27 @@ private:
     rx_event_action_info();
 };
 
+struct UHD_API tx_event_action_info : public action_info
+{
+public:
+    using sptr = std::shared_ptr<tx_event_action_info>;
+
+    //! The event code that describes the event
+    uhd::async_metadata_t::event_code_t event_code;
+
+    //! Has time specification?
+    bool has_tsf;
+
+    //! When the async event occurred
+    uint64_t tsf;
+
+    //! Factory function
+    static sptr make(uhd::async_metadata_t::event_code_t event_code);
+
+protected:
+    tx_event_action_info(uhd::async_metadata_t::event_code_t event_code);
+};
+
 }} /* namespace uhd::rfnoc */
 
 #endif /* INCLUDED_LIBUHD_RFNOC_ACTIONS_HPP */
-
diff --git a/host/include/uhd/rfnoc/defaults.hpp b/host/include/uhd/rfnoc/defaults.hpp
index 008847091..efc774467 100644
--- a/host/include/uhd/rfnoc/defaults.hpp
+++ b/host/include/uhd/rfnoc/defaults.hpp
@@ -32,11 +32,12 @@ static const io_type_t IO_TYPE_SC16 = "sc16";
 static const std::string ACTION_KEY_STREAM_CMD("stream_cmd");
 static const std::string ACTION_KEY_RX_EVENT("rx_event");
 static const std::string ACTION_KEY_RX_RESTART_REQ("restart_request");
+static const std::string ACTION_KEY_TX_EVENT("tx_event");
 
 //! If the block name can't be automatically detected, this name is used
 static const std::string DEFAULT_BLOCK_NAME = "Block";
 //! This NOC-ID is used to look up the default block
-static const uint32_t DEFAULT_NOC_ID = 0xFFFFFFFF;
+static const uint32_t DEFAULT_NOC_ID  = 0xFFFFFFFF;
 static const double DEFAULT_TICK_RATE = 1.0;
 // Whenever we need a default spp value use this, unless there are some
 // block/device-specific constraints. It will keep the frame size below 1500.