[openib-general] CM header file

[Sean Hefty]

Libor Michalek wrote:
> On Thu, Dec 16, 2004 at 12:14:18PM -0800, Sean Hefty wrote:
> 
>>One final note, I'm hoping that a more abstracted CM could be layered 
>>on top of this one, if it were desired.  E.g. one that performs QP 
>>transitions, automatically generates MRAs, retries requests, etc.
> 
> 
>   Are you suggesting that this proposed CM layer would not be responsible
> for retries and timeouts? I'm not sure how useful that would be, seems
> like every CM consumer would need/want these capabilities.

I was trying to match the existing MAD API.  The CM would perform 
timeouts, but not retries.  Consumers could retry request immediately 
upon notification of a timeout.  This lets the client change the 
timeout value.  (I'm negotiable on this, but the cost of having clients 
initiate retries is basically one function call.)

I have given some thought to how retries should work.  I've thought 
about adding a new call, ib_retry_cm_send() - or something like that, 
that resends the last message sent.  Or the callback could indicate to 
retry.

- Sean