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Date:	Tue, 20 Feb 2007 14:23:13 +0300
From:	Evgeniy Polyakov <>
To:	Eric Dumazet <>
Cc:	David Miller <>,,,,
Subject: Re: Extensible hashing and RCU

On Tue, Feb 20, 2007 at 12:10:22PM +0100, Eric Dumazet ( wrote:
> Please explain why you chose    h = jhash_2words(faddr, laddr, ports);
>         h ^= h >> 16;
>         h ^= h >> 8;
> jhash is very good, no need to try to be smarter, shufling some bytes... and 
> adding artifacts.

If distribution is fair its whift produces still fair distribution.
In the discussion linked at that test I also produced results without
shifts, which were exactly the same.

	Evgeniy Polyakov
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