rfnoc: add rx and tx transports, and amend rfnoc_graph

transports:

Transports build on I/O service and implements flow control and
sequence number checking.

The rx streamer subclass extends the streamer implementation to connect
it to the rfnoc graph. It receives configuration values from property
propagation and configures the streamer accordingly. It also implements
the issue_stream_cmd rx_streamer API method.

Add implementation of rx streamer creation and method to connect it to
an rfnoc block.

rfnoc_graph: Cache more connection info, clarify contract

Summary of changes:
- rfnoc_graph stores more information about static connections at the
  beginning. Some search algorithms are replaced by simpler lookups.
- The contract for connect() was clarified. It is required to call
  connect, even for static connections.

1 files changed, 34 insertions, 0 deletions

diff --git a/host/lib/rfnoc/graph_stream_manager.cpp b/host/lib/rfnoc/graph_stream_manager.cpp
index f2024786a..2db68db04 100644
--- a/host/lib/rfnoc/graph_stream_manager.cpp
+++ b/host/lib/rfnoc/graph_stream_manager.cpp
@@ -8,7 +8,9 @@
 #include <uhd/utils/log.hpp>
 #include <uhdlib/rfnoc/graph_stream_manager.hpp>
 #include <uhdlib/rfnoc/link_stream_manager.hpp>
+#include <uhdlib/rfnoc/chdr_rx_data_xport.hpp>
 #include <boost/format.hpp>
+#include <boost/make_shared.hpp>
 #include <map>
 #include <set>
 
@@ -175,6 +177,38 @@ public:
                                  "specified source endpoint");
     }
 
+    chdr_rx_data_xport::uptr create_device_to_host_data_stream(
+        const sep_addr_t src_addr,
+        const sw_buff_t pyld_buff_fmt,
+        const sw_buff_t mdata_buff_fmt,
+        const device_addr_t& xport_args)
+    {
+        // TODO: choose a route
+        const device_id_t via_device = NULL_DEVICE_ID;
+
+        return _link_mgrs.at(_check_dst_and_find_src(src_addr, via_device))
+            ->create_device_to_host_data_stream(src_addr,
+                pyld_buff_fmt,
+                mdata_buff_fmt,
+                xport_args);
+    }
+
+    virtual chdr_tx_data_xport::uptr create_host_to_device_data_stream(
+        sep_addr_t dst_addr,
+        const sw_buff_t pyld_buff_fmt,
+        const sw_buff_t mdata_buff_fmt,
+        const device_addr_t& xport_args)
+    {
+        // TODO: choose a route
+        const device_id_t via_device = NULL_DEVICE_ID;
+
+        return _link_mgrs.at(_check_dst_and_find_src(dst_addr, via_device))
+            ->create_host_to_device_data_stream(dst_addr,
+                pyld_buff_fmt,
+                mdata_buff_fmt,
+                xport_args);
+    }
+
 private:
     device_id_t _check_dst_and_find_src(sep_addr_t dst_addr, device_id_t via_device) const
     {