Re: [RFC] be2net: add rxhash support

-----Original Message-----
From: Eric Dumazet [mailto:eric.dumazet@gmail.com]
Sent: Friday, February 25, 2011 1:33 PM
To: Khaparde, Ajit
Cc: netdev@vger.kernel.org
Subject: Re: [RFC] be2net: add rxhash support

I added some traces, and I am not sure its OK :

With one active tcp flow, I got different rxhash values :

[ 1064.674253] rxhash=bbd37952 rsshp=1 bank=1
[ 1064.738104] rxhash=37acd31d rsshp=1 bank=1
[ 1064.741684] rxhash=bbd37952 rsshp=1 bank=1
[ 1064.874283] rxhash=bbd37952 rsshp=1 bank=1
[ 1064.940201] rxhash=bbd37952 rsshp=1 bank=1
[ 1064.955278] rxhash=b668ace2 rsshp=1 bank=1
[ 1065.080028] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.153360] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.293164] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.401862] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.460506] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.519980] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.650160] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.717585] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.730909] rxhash=37acd31d rsshp=1 bank=1
[ 1065.840350] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.900704] rxhash=bbd37952 rsshp=1 bank=1
[ 1065.931526] rxhash=b668ace2 rsshp=1 bank=1
[ 1066.503657] rxhash=bbd37952 rsshp=1 bank=1
[ 1066.570138] rxhash=bbd37952 rsshp=1 bank=1

How is it possible ?

(I have a VLAN config on top of a bonding)

I'm looking at this..
There is no switch involved in your test, just back to back?

Also, Ajit, we need something to allow ethtool -K rxhash {on|off}

Something like (completely untested)

Yes. That is in the works.

Thanks
-Ajit

Le vendredi 25 février 2011 à 13:36 -0600, Ajit Khaparde a écrit :

quoted

-----Original Message-----
From: Eric Dumazet [mailto:eric.dumazet@gmail.com]

How is it possible ?

(I have a VLAN config on top of a bonding)

I'm looking at this..
There is no switch involved in your test, just back to back?

There is a switch.

Machines are HP ProLiant BL460c G7

But why do you ask ?