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, 3 insertions, 11 deletions

diff --git a/host/lib/include/uhdlib/transport/offload_io_service.hpp b/host/lib/include/uhdlib/transport/offload_io_service.hpp
index a7d9d211d..02231c502 100644
--- a/host/lib/include/uhdlib/transport/offload_io_service.hpp
+++ b/host/lib/include/uhdlib/transport/offload_io_service.hpp
@@ -8,6 +8,7 @@
 #define INCLUDED_UHDLIB_TRANSPORT_OFFLOAD_IO_SERVICE_HPP
 
 #include <uhdlib/transport/io_service.hpp>
+#include <vector>
 
 namespace uhd { namespace transport {
 
@@ -21,18 +22,9 @@ namespace uhd { namespace transport {
 class offload_io_service : public io_service
 {
 public:
-    enum client_type_t
-    {
-        RECV_ONLY,
-        SEND_ONLY,
-        BOTH_SEND_AND_RECV
-    };
+    enum client_type_t { RECV_ONLY, SEND_ONLY, BOTH_SEND_AND_RECV };
 
-    enum wait_mode_t
-    {
-        POLL,
-        BLOCK
-    };
+    enum wait_mode_t { POLL, BLOCK };
 
     /*!
      * Options for configuring offload I/O service