[ofw] callback support in ibv_create_cq

[Prasanna Vv]

Hi All,

I would like to know if  libibverbs   'ibv_create_cq'  supports  
asynchronous callback  on completion of  post send transfer or only cq 
polling is supported.
I observe IBAL 'ib_create_cq' supports asynchronous callback. So is the 
winverbs 'ibv_create_cq' constrained to polling mechanism only due to 
user mode mailbox  access to HCA.

Thanks,
Prasanna