netdev - Re: [RFC] be2net: add rxhash support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 25 Feb 2011 13:36:40 -0600
From:	Ajit Khaparde <ajit.khaparde@...lex.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	<netdev@...r.kernel.org>
Subject: Re: [RFC] be2net: add rxhash support

> -----Original Message-----
> From: Eric Dumazet [mailto:eric.dumazet@...il.com]
> Sent: Friday, February 25, 2011 1:33 PM
> To: Khaparde, Ajit
> Cc: netdev@...r.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
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html