From: "Chilikin, Andrey" <andrey.chilikin@intel.com>
To: Yerden Zhumabekov <e_zhumabekov@sts.kz>,
"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
Kamraan Nasim <knasim@sidebandnetworks.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: Yuanzhang Hu <YHu@sidebandnetworks.com>
Subject: Re: [dpdk-dev] Load-balancing position field in DPDK load_balancer sample app vs. Hash table
Date: Mon, 17 Nov 2014 10:15:51 +0000 [thread overview]
Message-ID: <AAC06825A3B29643AF5372F5E0DDF0533502764F@IRSMSX106.ger.corp.intel.com> (raw)
In-Reply-To: <546639EA.3040404@sts.kz>
Fortville can calculate hash for packets encapsulated into different tunnels: GRE/NVGRE, VXLAN, QinQ (S-Tag + C-Tag), but at the moment current version of DPDK supports only VXLAN.
Regards,
Andrey
-----Original Message-----
From: Yerden Zhumabekov [mailto:e_zhumabekov@sts.kz]
Sent: Friday, November 14, 2014 5:21 PM
To: Chilikin, Andrey; Ananyev, Konstantin; Kamraan Nasim; dev@dpdk.org
Cc: Yuanzhang Hu; Zhang, Helin
Subject: Re: [dpdk-dev] Load-balancing position field in DPDK load_balancer sample app vs. Hash table
Thank you. And one more thing, does Fortville (or Niantic) support various L2 headers when calculating RSS hash? I mean MPLS, QinQ, etc.?
14.11.2014 22:57, Chilikin, Andrey пишет:
> Fortville supports symmetrical hashing on HW level, a patch for i40e PMD was submitted a couple of weeks ago. For Niantic you can use symmetrical rss key recommended by Konstantin.
>
> Regards,
> Andrey
>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ananyev,
> Konstantin
> Sent: Friday, November 14, 2014 4:50 PM
> To: Yerden Zhumabekov; Kamraan Nasim; dev@dpdk.org
> Cc: Yuanzhang Hu
> Subject: Re: [dpdk-dev] Load-balancing position field in DPDK
> load_balancer sample app vs. Hash table
>
>> -----Original Message-----
>> From: Yerden Zhumabekov [mailto:e_zhumabekov@sts.kz]
>> Sent: Friday, November 14, 2014 4:23 PM
>> To: Ananyev, Konstantin; Kamraan Nasim; dev@dpdk.org
>> Cc: Yuanzhang Hu
>> Subject: Re: [dpdk-dev] Load-balancing position field in DPDK
>> load_balancer sample app vs. Hash table
>>
>> I'd like to interject a question here.
>>
>> In case of flow classification, one might possibly prefer for packets
>> from the same flow to fall on the same logical core. With this '%'
>> load balancing, it would require to get the same RSS hash value for
>> packets with direct (src to dst) and swapped (dst to src) IPs and
>> ports. Am I correct that hardware RSS calculation cannot provide this symmetry?
> As I remember, it is possible but you have to tweak rss key values.
> Here is a paper describing how to do that:
> http://www.ndsl.kaist.edu/~shinae/papers/TR-symRSS.pdf
>
> Konstantin
>
--
Sincerely,
Yerden Zhumabekov
State Technical Service
Astana, KZ
next prev parent reply other threads:[~2014-11-17 10:05 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-13 18:29 Kamraan Nasim
2014-11-14 10:53 ` Bruce Richardson
2014-11-14 14:44 ` Ananyev, Konstantin
2014-11-14 16:23 ` Yerden Zhumabekov
2014-11-14 16:50 ` Ananyev, Konstantin
2014-11-14 16:55 ` Yerden Zhumabekov
2014-11-14 16:57 ` Chilikin, Andrey
2014-11-14 17:20 ` Yerden Zhumabekov
2014-11-17 10:15 ` Chilikin, Andrey [this message]
2014-11-14 18:49 ` Matt Laswell
2014-11-15 7:10 ` Yerden Zhumabekov
2014-11-15 15:28 ` Matt Laswell
2014-11-17 0:48 ` Zhang, Helin
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