Name
rio_enum_peer — 
     Recursively enumerate a RIO network through a master port
 
Arguments
- net
- 
     RIO network being enumerated
     
- port
- 
     Master port to send transactions
     
- hopcount
- 
     Number of hops into the network
     
- prev
- 
     Previous RIO device connected to the enumerated one
     
- prev_port
- 
     Port on previous RIO device
     
Description
   Recursively enumerates a RIO network.  Transactions are sent via the
   master port passed in port.