Hal, unfortunately, IBTA punted on this issue. We considered it for IBTA CM IP address annex but at the end could not handle all the cases. Thanks,
Arkady Kanevsky email: [EMAIL PROTECTED] 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: Hal Rosenstock [mailto:[EMAIL PROTECTED] > Sent: Wednesday, February 07, 2007 7:20 PM > To: Sean Hefty > Cc: Jason Gunthorpe; Roland Dreier; > openib-general@openib.org; Kanevsky, Arkady > Subject: Re: [openib-general] [PATCH] IPOIB: Use a GRH when > appropriate forunicast packets > > On Wed, 2007-02-07 at 15:24, Sean Hefty wrote: > > > I didn't get too far on getting CMA to work. Beyond the > bad HopLimit > > > feild I was seeing Hal pointed out a number of problems > in IBA that > > > would prevent it from working as is :< > > > > I've started thinking about what it would take to get the > rdma cm to > > work across a router. I think the rdma cm may need to treat IPv6 > > addresses as a GID for this to work across subnets, versus > trying to > > map an ipoib IP address to a GID based on ARP. > > An IB GID is IPv6 like but not an IPv6 address so I don't > think this is a good idea and don't see how you get around > mapping IP addresses to GIDs in an IB routed network given > the way things are spec'd. I think that the RDMA CM assumes a > single IPoIB subnet. Does it work when the destination is on > another subnet ? I think there are some unaddressed gateway > issues here to make that work and these may have been punted > (during spec time). Arkady might be a good person to comment on this. > > -- Hal > > > - Sean > > > > _______________________________________________ > > openib-general mailing list > > openib-general@openib.org > > http://openib.org/mailman/listinfo/openib-general > > > > To unsubscribe, please visit > > http://openib.org/mailman/listinfo/openib-general > > > _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
