[Click] user level todevice and infinitesource

[John Bicket]

I'm trying to hook up a config like this:

InfiniteSource() -> ... -> ToDevice()


Is there a way for todevice to not try to send a packet when there are
no buffers for it?  Whenever I try this, I just get tons of 

ToDevice(ath0) send: No buffer space available

fron stderr, since the kernel device queue is getting full.

--john