[openib-general] Re: [uDAPLl] question about dapl_ib_cq_resize

Dotan Barak dotanb at mellanox.co.il
Tue Apr 11 01:39:22 PDT 2006


On Monday 10 April 2006 23:47, James Lentini wrote:
> 
> On Fri, 7 Apr 2006, Dotan Barak wrote:
> 
> > Hi.
> >  
> >  
> > I looked at the file: src/userspace/dapl/dapl/openib/dapl_ib_cq.c,
> > function: dapl_ib_cq_resize:
> > In this function, when one wants to resize a CQ, the dapl destroys the
> > old CQ and creates a new one instead of calling to the resize CQ verb
> > (which was added ~3 months ago), 
> >  
> > is there is a reason for this code?
> > (please notice that the current implementation of the resize CQ function
> > will fail if there are QPs that using this CQ).
> 
> As Arlin noted, that verb was not available when the code was written.
> 
> Do all the userspace hw libraries support this verb?
> 

The mthca driver (both user and kernel) supports the resize_cq, i don't know if the other low level drivers support this verb.
can someone answer this question for other low level drivers?

thanks
Dotan



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