Messages in this thread | | | Date | Wed, 16 Dec 2015 01:52:22 -0500 | From | "ira.weiny" <> | Subject | Re: [PATCH RESEND] infiniband:core:Add needed error path in cm_init_av_by_path |
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On Tue, Dec 15, 2015 at 10:30:22AM -0700, Jason Gunthorpe wrote: > On Tue, Dec 15, 2015 at 05:38:34PM +0100, Michael Wang wrote: > > The hop_limit is only suggest that the package allowed to be > > routed, not have to, correct? > > If the hop limit is >= 2 (?) then the GRH is mandatory.
Yes >= 2.
"Setting this value to 0 or 1 will ensure that the packet will not be forwarded beyond the local subnet."
-- IBTA 8.3.6 Hop Limit
Ira
> The > SM will return this information in the PathRecord if it determines a > GRH is required. The whole stack follows this protocol. > > The GRH is optional for in-subnet communications. > > Jason > -- > To unsubscribe from this list: send the line "unsubscribe linux-rdma" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
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