tree 36922f55666255c2f28c1080d364f381ea5437d3
parent 2c44a64acb5287764e84e512f63fe8b24ff44b46
author Jonathan Hart <jono@onlab.us> 1407970679 -0700
committer Saurav Das <sauravdas@alumni.stanford.edu> 1409942844 -0700

Fixed an issue that caused FlowPusher to go into an infinite loop.

FlowPusher used to use the IOFSwitch object as a key in its data structures.
When the IOFSwitchListener inteface changed to include only the DPID in its
callback methods instead of the IOFSwitch, the FlowPusher is now not able
to get a reference to the switch once it has disconnected. This means
FlowPusher can't clean out its data structures and it if messages are still
in the queue for the switch it will try and send them forever.

The fix is to change FlowPusher so its internal data structures use the DPID
as the key. While doing this I also changed most of its APIs so that they also
reference switches by DPID rather than by IOFSwitch.

Change-Id: I255d64fdac21d8b147f991ff41f6ecace310b116