Re: Load-balancing position field in DPDK load_balancer sample app vs. Hash table

[Yerden Zhumabekov <e_zhumabekov-8EHiFRVJVgQ@public.gmane.org>]

14.11.2014 22:50, Ananyev, Konstantin пишет:
>> -----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_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

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

-- 
Sincerely,

Yerden Zhumabekov
State Technical Service
Astana, KZ