On Tue, 15 Dec 2009 10:31:40 -0700 Jason Gunthorpe <jguntho...@obsidianresearch.com> wrote:
[snip] > > The spec provides no guidance whatsoever on how to tell if a packets > generated from a PR need a GRH or not. The only other choice is to > compare the resulting DGID against all the GID prefixs on the port and > see if any match. > > If a router spec is ever written I'm sure it will clarify this matter, > and everyone will follow. > > The SM decides what hop limit should be so the SM decides if it needs > a GRH. I belive the original long ago version of this always set the > hop limit to 0 unless the DLID was a router port. Ok, then I think we need a new way to tell if we are hitting a router port in pr_rcv_build_pr. I don't think having a non-zero GID is the definition of going through a router port. Ira > > Jason -- Ira Weiny Math Programmer/Computer Scientist Lawrence Livermore National Lab 925-423-8008 wei...@llnl.gov -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
