Name
relay_reset — 
     reset the channel
 
Synopsis
| void relay_reset ( | struct rchan * chan ); | 
 
Description
   This has the effect of erasing all data from all channel buffers
   and restarting the channel in its initial state.  The buffers
   are not freed, so any mappings are still in effect.
   
   NOTE. Care should be taken that the channel isn't actually
   being used by anything when this call is made.