From: Eli Cohen <eli@mellanox.co.il>
Date: Thu, 2 Mar 2006 20:40:46 +0000 (-0800)
Subject: IB/mthca: Optimize large messages on Sinai HCAs
X-Git-Tag: v2.6.17-rc1~1180^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=651eaac92894f8b6761c51b6637ea9cacea7fba2;p=pandora-kernel.git

IB/mthca: Optimize large messages on Sinai HCAs

Sinai (one-port PCI Express) HCAs get improved throughput for messages
bigger than 80 KB in DDR mode if memory keys are formatted in a
specific way.  The enhancement only works if the memory key table is
smaller than 2^24 entries.  For larger tables, the enhancement is off
and a warning is printed (to avoid silent performance loss).

Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Michael Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

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