From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org, wirelesser@gmail.com
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) [thread overview]
Message-ID: <20101206.130252.232758553.davem@davemloft.net> (raw)
In-Reply-To: <1291189556.2856.476.camel@edumazet-laptop>
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.
next prev parent reply other threads:[~2010-12-06 21:02 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-30 9:22 multi bpf filter will impact performance? Rui
2010-11-30 9:34 ` Eric Dumazet
[not found] ` <AANLkTi=VpmnrXTBNV7McQm6mq9ULT7KTKbM8_hLPoL=2@mail.gmail.com>
[not found] ` <1291127670.2904.96.camel@edumazet-laptop>
2010-12-01 3:48 ` Rui
2010-12-01 4:03 ` Eric Dumazet
2010-12-01 7:45 ` [PATCH net-next-2.6] filter: add SKF_AD_RXHASH and SKF_AD_CPU Eric Dumazet
2010-12-01 8:03 ` Changli Gao
2010-12-06 21:02 ` David Miller [this message]
2010-12-03 9:40 ` multi bpf filter will impact performance? Junchang Wang
2010-12-01 7:36 ` Changli Gao
2010-12-01 7:47 ` Eric Dumazet
2010-12-01 7:59 ` Changli Gao
2010-12-01 8:09 ` Eric Dumazet
2010-12-01 8:15 ` Changli Gao
2010-12-01 8:42 ` Eric Dumazet
2010-12-01 17:22 ` Hagen Paul Pfeifer
2010-12-01 18:18 ` David Miller
2010-12-01 18:24 ` David Miller
2010-12-01 18:24 ` Eric Dumazet
2010-12-01 18:44 ` David Miller
2010-12-01 19:48 ` Eric Dumazet
2010-12-01 20:23 ` David Miller
2010-12-01 20:45 ` [PATCH net-next-2.6] filter: add a security check at install time Eric Dumazet
2010-12-02 2:30 ` Changli Gao
2010-12-02 6:46 ` Eric Dumazet
2010-12-02 8:11 ` Changli Gao
2010-12-02 8:53 ` Eric Dumazet
2010-12-02 9:00 ` Eric Dumazet
2010-12-02 9:10 ` Changli Gao
2010-12-02 9:54 ` Eric Dumazet
2010-12-02 10:10 ` Changli Gao
2010-12-02 11:15 ` Eric Dumazet
2010-12-02 11:29 ` Changli Gao
2010-12-02 13:14 ` Eric Dumazet
2010-12-02 10:59 ` Changli Gao
2010-12-06 21:07 ` David Miller
2010-12-03 6:32 ` multi bpf filter will impact performance? Eric Dumazet
2010-12-05 20:53 ` PATCH] filter: fix sk_filter rcu handling Eric Dumazet
2010-12-05 21:08 ` Andi Kleen
2010-12-05 21:28 ` Eric Dumazet
2010-12-06 17:29 ` David Miller
2010-11-30 10:01 ` multi bpf filter will impact performance? Eric Dumazet
2010-11-30 11:17 ` Eric Dumazet
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