Eli Cohen wrote:
Add Large Receive Offload support to IPOIB
Reduce overhead incurred by handling many small packets
by aggregating SKBs related to the same stream and passing
them up. This patch is based on the work done for MTNIC
by Liran Liss <[EMAIL PROTECTED]>
Hi Eli,
Back on April a user having the configuration
A --- 10g --- B --- IB --- C
where node B acts as an IP router having one 10g interface
and one IB interface reported on a sever bandwidth problem
which was resolved to be related to the 10g driver have LRO mechanism
which is not operative under forwarding scheme, see the email/thread
http://lists.openfabrics.org/pipermail/general/2007-April/035322.html
My question is, does the suggested LRO code need to be disabled when the
node does forwarding?
Indeed you have removed the LSO, LRO patches from the stateless offload
patch set posting to the upstream kernel, but they do exist in OFED 1.3
Tziporet - I am quite worried from distributing with OFED 1.3 ipoib
changes (namely LSO and LRO support) which were never reviewed by the
community and that I understand are not planned for review towards 2.6.24.
What is your thinking on the matter?
Or.
-----Original Message-----
From: [EMAIL PROTECTED] On Behalf Of David Miller
Sent: Saturday, April 28, 2007 2:40 AM
To: [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED]; [EMAIL PROTECTED];
[email protected]
Subject: Re: [ofa-general] Re: IPoIB forwarding
From: Rick Jones <[EMAIL PROTECTED]>
Date: Fri, 27 Apr 2007 16:37:49 -0700
Large Receive Offload (LRO) is enabled by default. This will
interfere with forwarding TCP traffic. If you plan to forward TCP
traffic (using the host with the Myri10GE NIC as a router or bridge),
you must disable LRO. To disable LRO, load the myri10ge driver with
myri10ge_lro set to 0:
LRO should be disabled by default if the driver does this. This is a major and
unacceptable bug.
Thanks for pointing this out Rick.
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