From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH net-next-2.6] filter: add SKF_AD_RXHASH and SKF_AD_CPU
Date: Mon, 06 Dec 2010 13:02:52 -0800 (PST)
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 01 Dec 2010 08:45:56 +0100

> Add SKF_AD_RXHASH and SKF_AD_CPU to filter ancillary mechanism,
> to be able to build advanced filters.
> 
> This can help spreading packets on several sockets with a fast
> selection, after RPS dispatch to N cpus for example, or to catch a
> percentage of flows in one queue.
> 
> tcpdump -s 500 "cpu = 1" :
> 
> [0] ld CPU
> [1] jeq #1  jt 2  jf 3 
> [2] ret #500
> [3] ret #0
> 
> # take 12.5 % of flows (average)
> tcpdump -s 1000 "rxhash & 7 = 2" :
> 
> [0] ld RXHASH
> [1] and #7
> [2] jeq #2  jt 3  jf 4 
> [3] ret #1000
> [4] ret #0
> 
> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Applied.