uhd: Introduce I/O service manager

- Implement I/O service detach link methods
- The I/O service manager instantiates new I/O services or connects
  links to existing I/O services based on options provided by the user
  in stream_args.
- Add a streamer ID parameter to methods to create transports so that
  the I/O service manager can group transports appropriately when using
  offload threads.
- Change X300 and MPMD to use I/O service manager to connect links to
  I/O services.
- There is now a single I/O service manager per rfnoc_graph (and it is
  also stored in the graph)
- The I/O service manager now also knows the device args for the
  rfnoc_graph it was created with, and can make decisions based upon
  those (e.g, use a specific I/O service for DPDK, share cores between
  streamers, etc.)
- The I/O Service Manager does not get any decision logic with this
  commit, though
- The MB ifaces for mpmd and x300 now access this global I/O service
  manager
- Add configuration of link parameters with overrides

Co-Authored-By: Martin Braun <martin.braun@ettus.com>
Co-Authored-By: Aaron Rossetto <aaron.rossetto@ni.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/host/lib/include/uhdlib/rfnoc/graph_stream_manager.hpp b/host/lib/include/uhdlib/rfnoc/graph_stream_manager.hpp
index 8a721ea26..b9f4205ab 100644
--- a/host/lib/include/uhdlib/rfnoc/graph_stream_manager.hpp
+++ b/host/lib/include/uhdlib/rfnoc/graph_stream_manager.hpp
@@ -19,6 +19,7 @@
 #include <functional>
 #include <memory>
 #include <set>
+#include <string>
 #include <tuple>
 
 namespace uhd { namespace rfnoc {
@@ -114,6 +115,7 @@ public:
      * \param mdata_buff_fmt Datatype of SW buffer that holds the data metadata
      * \param adapter The preference for the adapter to use to get to the destination
      * \param xport_args The transport arguments
+     * \param streamer_id A unique identifier for the streamer that will own the transport
      * \return An transport instance
      */
     virtual chdr_rx_data_xport::uptr create_device_to_host_data_stream(
@@ -121,7 +123,8 @@ public:
         const sw_buff_t pyld_buff_fmt,
         const sw_buff_t mdata_buff_fmt,
         const uhd::transport::adapter_id_t adapter,
-        const device_addr_t& xport_args) = 0;
+        const device_addr_t& xport_args,
+        const std::string& streamer_id) = 0;
 
     /*! \brief Create a data stream going from the host to the device
      *
@@ -130,6 +133,7 @@ public:
      * \param mdata_buff_fmt Datatype of SW buffer that holds the data metadata
      * \param adapter The preference for the adapter to use to get to the destination
      * \param xport_args The transport arguments
+     * \param streamer_id A unique identifier for the streamer that will own the transport
      * \return An transport instance
      */
     virtual chdr_tx_data_xport::uptr create_host_to_device_data_stream(
@@ -137,7 +141,8 @@ public:
         const sw_buff_t pyld_buff_fmt,
         const sw_buff_t mdata_buff_fmt,
         const uhd::transport::adapter_id_t adapter,
-        const device_addr_t& xport_args) = 0;
+        const device_addr_t& xport_args,
+        const std::string& streamer_id) = 0;
 
     /*! \brief Get all the adapters that can reach the specified endpoint
      *