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, 5 insertions, 5 deletions

diff --git a/host/lib/rfnoc/mgmt_portal.cpp b/host/lib/rfnoc/mgmt_portal.cpp
index b490e0baf..a8b72cbdf 100644
--- a/host/lib/rfnoc/mgmt_portal.cpp
+++ b/host/lib/rfnoc/mgmt_portal.cpp
@@ -794,12 +794,11 @@ private: // Functions
         mgmt_hop_t& hop)
     {
         // Validate flow control parameters
-        if (fc_freq.bytes >= (uint64_t(1) << 40)
-            || fc_freq.packets >= (uint64_t(1) << 24)) {
+        if (fc_freq.bytes > MAX_FC_FREQ_BYTES || fc_freq.packets > MAX_FC_FREQ_PKTS) {
             throw uhd::value_error("Flow control frequency parameters out of bounds");
         }
-        if (fc_headroom.bytes >= (uint64_t(1) << 16)
-            || fc_headroom.packets >= (uint64_t(1) << 8)) {
+        if (fc_headroom.bytes > MAX_FC_HEADROOM_BYTES
+            || fc_headroom.packets > MAX_FC_HEADROOM_PKTS) {
             throw uhd::value_error("Flow control headroom parameters out of bounds");
         }
 
@@ -992,7 +991,8 @@ private: // Functions
 
         auto send_buff = xport.get_send_buff(timeout * 1000);
         if (not send_buff) {
-            UHD_LOG_ERROR("RFNOC::MGMT", "Timed out getting send buff for management transaction");
+            UHD_LOG_ERROR(
+                "RFNOC::MGMT", "Timed out getting send buff for management transaction");
             throw uhd::io_error("Timed out getting send buff for management transaction");
         }
         _send_pkt->refresh(send_buff->data(), header, payload);