openflow indigo artchitecture

Indigo is project to produce OpenFlow enabled hardware switch. Here is the software architecture of OpenFlow enabled hardware switch they posted on their website.

Here we can see several long running processes. But there is no details about the functionality of each process. Which serves for the openflow controller? Here is the missing information. As you can see, the ofprotocol and ofdatapath actually talk to the openflow controllers and monitors.