RE: [PATCH V1 for-next 1/2] IB/core: Report LSO capabilities when querying device

["Steve Wise" <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>]

> 
> > I've been trying to follow this thread, and there has been comments that
other
> > device owners should speak up.  But I'm not sure what LSO would do for an
iWARP
> > RC QP connection.  Can someone give me a quick summary?
> 
> It is unlikely someone would use LSO and an iWarp RC QP together.
> 
> However, an iWarp NIC may want to expose the raw ethernet QP style of
> feature, which would probably also want to include the LSO, RSS,
> timestamping etc features.
> 

Yes, that makes sense.  Chelsio has something like this that is currently
out-of-kernel.  But there is no LSO/RSS support.  And it needs major rewrite to
become acceptable for inclusion upstream.  But I can review the changes with
this in mind.  

> Most likely iWarp cards already include LSO features in their
> netdevice drivers? In that instance I'd say, imagine that same LSO
> feature works on a verbs QP and ask if the patch covers the way it
> works.
>

All of Chelsio's cards support LSO features (and all the other important NIC
features).  I'll think about the proposed API and if it would be sufficient for
a RAW_QP type of service.

Thanks for the summary Jason!  

Steve.

--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html