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From: Yerden Zhumabekov <e_zhumabekov-8EHiFRVJVgQ@public.gmane.org>
Subject: Re: Load-balancing position field in DPDK load_balancer
 sample app vs. Hash table
Date: Fri, 14 Nov 2014 22:55:31 +0600
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Cc: Yuanzhang Hu <YHu-LfGgLkH2qHaTtA8H5PvdGFaTQe2KTcn/@public.gmane.org>
To: "Ananyev, Konstantin" <konstantin.ananyev-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>, Kamraan Nasim
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14.11.2014 22:50, Ananyev, Konstantin =D0=BF=D0=B8=D1=88=D0=B5=D1=82:
>> -----Original Message-----
>> From: Yerden Zhumabekov [mailto:e_zhumabekov-8EHiFRVJVgQ@public.gmane.org]
>> Sent: Friday, November 14, 2014 4:23 PM
>> To: Ananyev, Konstantin; Kamraan Nasim; dev-VfR2kkLFssw@public.gmane.org
>> Cc: Yuanzhang Hu
>> Subject: Re: [dpdk-dev] Load-balancing position field in DPDK load_bal=
ancer 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 '%' loa=
d
>> 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

Oh, very interesting paper. Thank you for hinting. Need to give it a go.

--=20
Sincerely,

Yerden Zhumabekov
State Technical Service
Astana, KZ