[openib-general] dapl broken for iWARP

[Kanevsky, Arkady]

Steve,
what is an issue of using 
max_qp_rd_atom and max_qp_init_rd_atom
beside the bad name?
Thanks,

Arkady Kanevsky                       email: arkady at netapp.com
Network Appliance Inc.               phone: 781-768-5395
1601 Trapelo Rd. - Suite 16.        Fax: 781-895-1195
Waltham, MA 02451                   central phone: 781-768-5300
 

> -----Original Message-----
> From: Steve Wise [mailto:swise at opengridcomputing.com] 
> Sent: Thursday, February 08, 2007 6:11 PM
> To: Arlin Davis
> Cc: openib-general
> Subject: Re: [openib-general] dapl broken for iWARP
> 
> On Wed, 2007-02-07 at 15:57 -0600, Steve Wise wrote:
> > On Wed, 2007-02-07 at 14:02 -0600, Steve Wise wrote:
> > > Arlin,
> > > 
> > > The OFED dapl code is assuming the responder_resources and 
> > > initiator_depth passed up on a connection request event 
> are from the 
> > > remote peer.  This doesn't happen for iWARP.  In the 
> current iWARP 
> > > specifications, its up to the application to exchange this 
> > > information somehow. So these are defaulting to 0 on the 
> server side 
> > > of any dapl connection over iWARP.
> > > 
> > > This is a fairly recent change, I think.  We need to come up with 
> > > some way to deal with this for OFED 1.2 IMO.
> > > 
> > 
> > The IWCM could set these to the device max values for instance.
> > 
> > Steve.
> > 
> 
> There is a slight problem with all this.  There are no device 
> attributes currently for ORD and IRD.  The ammasso driver 
> maps these to max_qp_rd_atom (IRD) and 
> max_qp_init_rd_atom(ORD).  But this is screwy.
> We need new attribute for these.
> 
> For OFED 1.2, I think I should just have the IWCM set them to 
> 8.  The only RNIC in ofed is cxgb3 and it supports 8...
> 
> 
> Steve.
> 
> 
> _______________________________________________
> openib-general mailing list
> openib-general at openib.org
> http://openib.org/mailman/listinfo/openib-general
> 
> To unsubscribe, please visit 
> http://openib.org/mailman/listinfo/openib-general
>