[openib-general] ibv_cmd_create_qp() question

[Steve Wise]

Hey Roland,

Why don't I use the same scheme as Heiko for now.  Then I won't hold up
the release.  At this point, I can't say for sure what else we might
suggest to change in the core APIs anyway.  I'll submit a patch down the
road to fix the core to handle this ala create_cq(), but it can wait
until 1.1.0.

Sound like a plan?

Steve.




On Wed, 2006-02-15 at 22:18 +0100, Heiko J Schick wrote:
> Hello Steven,
> 
> we had this problem, too. For ibv_cmd_create_qp we pass via our cmd  
> struct
> the address of the response block to the kernel.The kernel can copies  
> then
> all values into the response block (from kernel space to user space).
> 
> The provider library can then the provider specific information which  
> are
> passed from the kernel.
> 
> See ehcau_create_qp in ehca_umain.c for more information.
> 
> Regards,
> 	Heiko
> 
> On Feb 15, 2006, at 8:00 PM, Steve Wise wrote:
> 
> > I have a provider in the works that needs provider-specific  
> > information
> > passed from the kernel create_qp verb back to the provider  
> > library.  It
> > seems that ibv_cmd_create_qp() doesn't allow for provider-specific  
> > data
> > to be passed out of the kernel back to the provider lib.
> >
> > ibv_cmd_create_cq() does support this.
> >
> > I can come up with a patch to the code to support this, but I  
> > wanted to
> > query the group to make sure I'm not missing something.
> >
> > Is it a reasonable extension to add this to create_qp()?
> >
> > Thanks,
> >
> > Steve.
> >
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