[ofa-general] Bonding and hw_csum

Koen Segers koen.segers at vrt.be
Wed Jan 30 05:56:54 PST 2008


On Wed, 2008-01-30 at 15:34 +0200, Or Gerlitz wrote:
> Stijn De Smet wrote:
> > I'm trying to get IPOIB bonding to work with the hw_csum enabled. 
> ...
> > When I disable hw_csums, I can start iperf's, pull and replug all cables
> > and the iperf's run uninterrupted.
> 
> This is interesting report, however, since currently the hw checksum 
> patch in not being submitted to the mainline kernel and it is also about 
> to be removed from ofed 1.3 (Tziporet, can you update on that?), I am 
> not going to look into that.

Do you mean that bonding with hw_csum enabled will never work?

Why is hw_checksum not submitted to the mainline kernel (and thus also
removed from ofed)? We definitely want to enable hw_checksum as it gives
an enormous bandwidth boost with ipoib.

Koen.

> 
> Or.
> 
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