Merge pull request #33 from n7space/feature-n7s-tmcc#357-passthrough-…

…packetizer-fix

Fix in passthroughpacketizer to allow connection without destination …

src/Packetizer/PassthroughPacketizer.c

@@ -38,7 +38,7 @@ PassthroughPacketizer_init(Packetizer* const self, const enum SystemBus busId, s
 
     *headerSize = 0;
 
-    if(bus_to_unique_port_map[busId] == INTERFACE_INVALID_ID) {
+    if(bus_to_unique_port_map[busId] == INTERFACE_INVALID_ID && bus_has_any_destination_port[busId] != 0) {
         // Passthrough Packetizer requires an unique interface on bus.
         abort();
     }

src/RuntimeCommon/RoutingHelper.c

@@ -44,3 +44,18 @@ find_unique_destination(const enum SystemBus bus)
 
     return (enum RemoteInterface)found_interface;
 }
+
+int
+check_bus_has_any_destination_port(const enum SystemBus bus)
+{
+    size_t index;
+    int result = 0;
+    for(index = 0; index < INTERFACE_MAX_ID; ++index) {
+        if(port_to_partition_bus_map[index].partition != PARTITION_NAME
+           && port_to_partition_bus_map[index].bus == bus) {
+            result = 1;
+        }
+    }
+
+    return result;
+}

src/RuntimeCommon/RoutingHelper.h

@@ -39,4 +39,11 @@
  */
 enum RemoteInterface find_unique_destination(const enum SystemBus bus);
 
+/** @brief Check if bus has any destination port.
+ *
+ * @param[bus] system bus
+ * @return 0 if bus does not have any destination port, otherwise non-zero value
+ */
+int check_bus_has_any_destination_port(const enum SystemBus bus);
+
 #endif

src/RuntimeMocks/routing.c

@@ -1,3 +1,4 @@
 #include "routing.h"
 
 enum RemoteInterface bus_to_unique_port_map[] = { INTERFACE_INVALID_ID };
+int bus_has_any_destination_port[] = { 0 };

src/RuntimeMocks/routing.h

@@ -3,3 +3,4 @@
 #define PARTITION_NAME X86_PARTITION
 
 extern enum RemoteInterface bus_to_unique_port_map[];
+extern int bus_has_any_destination_port[];