[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-31 Thread Eli Cohen

On Wed, 2008-01-30 at 19:35 -0800, Shirley Ma wrote:
 Hello Tziporet,
 
  the hw checksum patch was removed from OFED 1.3
  
  Tziporet
 
 Could youp please specify which patch has been removed? I still can
 see a list of patches under RC3. here they are:
 
 ipoib_0010_Add-high-dma-support-to-ipoib.patch
 ipoib_0020_Add-s-g-support-for-IPOIB.patch
 ipoib_0030_hw_csum.patch
 ipoib_0040_checksum-offload.patch
 ipoib_0050_Add-LSO-support.patch
 ipoib_0060_ethtool-support.patch
 ipoib_0070_modiy_cq_params.patch
 ipoib_0080_broadcast_null.patch
 ipoib_0110_set_default_cq_patams.patch
 

ipoib_0030_hw_csum.patch has been removed

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[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-31 Thread Koen Segers
On Wed, 2008-01-30 at 18:42 +0200, Tziporet Koren wrote:
 Or Gerlitz wrote:
 
  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.
 
  Or.
 
 the hw checksum patch was removed from OFED 1.3

I just saw some patches on the mailing list concerning csum offloading.
Are these applied in RC3? Or are they going to be introduced in the
daily build of tomorrow?

Is it correct to state that these patches replace the hw_csum parameter
by offloading the csum computation to the mthca? This would mean that
the results should be similar also.

Does the new offload patch depend on the type of hca being used?
According to lspci, we have the InfiniBand: Mellanox Technologies
MT25208 InfiniHost III Ex (rev a0) card. Do these patches work on a
sles 10 sp1 installed on x3755 and x3655 machines of IBM that have this
card inserted?

Is bonding going to work with this type of offloading?

Kind Regards

Koen

 
 Tziporet
 
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Re: [ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-31 Thread Shirley Ma
Hello Eli,

 ipoib_0030_hw_csum.patch has been removed

Would removing this patch cause any errors on applying the rest of
patches? If not, I will remove it for our testing as well.

Thanks
Shirley

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[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-30 Thread Koen Segers
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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[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-30 Thread Or Gerlitz

Koen Segers wrote:

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


no, I meant to say that I am not enough into the details and mechanics 
of the hw_csum approach/patch and since I understand it is going to be 
removed, I will not look now on going into this report.



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.


you should ask that the individual/s that are signed on the patch

Or

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[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-30 Thread Koen Segers

On Wed, 2008-01-30 at 16:26 +0200, Or Gerlitz wrote:
  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.
 
 you should ask that the individual/s that are signed on the patch

Is this Michael S. Tsirkin?

I don't know where else to find this information.

Regards,

Koen
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Re: [ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-30 Thread Or Gerlitz
On 1/30/08, Koen Segers [EMAIL PROTECTED] wrote:
 On Wed, 2008-01-30 at 16:26 +0200, Or Gerlitz wrote:

 you should ask that the individual/s that are signed on the patch

 Is this Michael S. Tsirkin?
 I don't know where else to find this information.

In the Linux model, each change is a patch and each patch is signed,
so you should locate the patch and see who is signed on it. This can
be done each through using git log or browsing through git web on the
relevant tree. In this specific case, you can get a snapshot of ofed
1.3 before the patch was removed, get the tgz of ofa-kernel  SRPM and
untar it, the look on the directory kernel_patches/fixes it should be
there as a patch to patch.

Or.
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[ewg] Re: [ofa-general] Bonding and hw_csum

2008-01-30 Thread Shirley Ma




Hello Tziporet,

 the hw checksum patch was removed from OFED 1.3

 Tziporet

Could youp please specify which patch has been removed? I still can see a
list of patches under RC3. here they are:

ipoib_0010_Add-high-dma-support-to-ipoib.patch
ipoib_0020_Add-s-g-support-for-IPOIB.patch
ipoib_0030_hw_csum.patch
ipoib_0040_checksum-offload.patch
ipoib_0050_Add-LSO-support.patch
ipoib_0060_ethtool-support.patch
ipoib_0070_modiy_cq_params.patch
ipoib_0080_broadcast_null.patch
ipoib_0110_set_default_cq_patams.patch

thanks
Shirley___
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