[ofa-general] [RFC] upstream IB router support

[Hal Rosenstock]

On Wed, 2007-10-24 at 11:04 -0700, Sean Hefty wrote:
> A while ago, some support was added to the rdma stack to support IB routers in a
> very limited fashion (done as part of PathForward).  The relevant patches are
> available at:
> 
> 	git://git.openfabrics.org/~shefty/rdma-dev.git ib_router
> 
> I wanted to gauge interest merging these changes upstream for 2.6.25.  I know
> there is growing interest in using IB routers.  Obsidian has a router, and both
> Mellanox and QLogic adapters can be used to construct host routers.
> 
> The main disadvantage to merging the patches is that it slightly violates the IB
> CM protocol by sending invalid data in the CM REQ.  The patches can be
> optionally compiled in as experimental if needed.

My take ($0.02) on this is (at most) experimental if it is to be pushed
upstream.

The issue I see is how prestandard v. standard IB routers can be dealt
with as cleanly as possible.

-- Hal

> - Sean
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