netdev - RE: [PATCH 2/2] IB/ipoib: fix GRO merge failure for IPoIB originated TCP streams

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Message-ID: <1828884A29C6694DAF28B7E6B8A823733349A5D2@ORSMSX101.amr.corp.intel.com>
Date:	Fri, 3 Feb 2012 07:18:59 +0000
From:	"Hefty, Sean" <sean.hefty@...el.com>
To:	Or Gerlitz <ogerlitz@...lanox.com>
CC:	linux-rdma <linux-rdma@...r.kernel.org>,
	Shlomo Pongratz <shlomop@...lanox.com>,
	Roland Dreier <roland@...nel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: RE: [PATCH 2/2] IB/ipoib: fix GRO merge failure for IPoIB
 originated TCP streams

> Hi Sean, this is the patch posted earlier by Eric enhanced to
> have IPoIB to set gro_mac_header_len to the ipoib header len, does
> it make things to work okay for you?

I ran a quick test.  It helps some, but the performance for streaming packets in one direction is still only 0.11 Gbps.  It should be closer to 10-15 Gbps for ipoib on my systems.

- Sean
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