netdev - Re: [RFC][PATCH 0/4] RFS hardware acceleration

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Message-ID: <AANLkTikS8y0sCbA7wcAfV2i6L+UYQ14d-3dL5jg55Atq@mail.gmail.com>
Date:	Mon, 20 Sep 2010 12:36:20 -0700
From:	Tom Herbert <therbert@...gle.com>
To:	Ben Hutchings <bhutchings@...arflare.com>
Cc:	netdev@...r.kernel.org, linux-net-drivers@...arflare.com,
	Bob Felderman <feldy@...gle.com>
Subject: Re: [RFC][PATCH 0/4] RFS hardware acceleration

Thanks Ben, this does look interesting.  We'll try to take a look.


On Mon, Sep 20, 2010 at 12:01 PM, Ben Hutchings
<bhutchings@...arflare.com> wrote:
> Tom,
>
> This patch series extends RFS to use hardware RX filters where
> available.  Depending on the number of hardware RX queues and their
> IRQs' affinity, this should reduce the need for IPIs or at least get
> packets delivered to the right NUMA node.
>
> I've implemented the driver side of this for our hardware, though I
> don't know whether you have any of that to test on.  I would be very
> interested to know how much this can help in the sort of cases where you
> use RFS.
>
> Ben.
>
> Ben Hutchings (4):
>  IRQ: IRQ groups for multiqueue devices
>  net: RPS: Enable hardware acceleration
>  sfc: Implement RFS acceleration
>  sfc/RFS/irq_group debug output
>
>  drivers/net/sfc/efx.c     |   49 +++++++++++---
>  drivers/net/sfc/efx.h     |    9 +++
>  drivers/net/sfc/filter.c  |  109 +++++++++++++++++++++++++++++
>  include/linux/irq.h       |   52 ++++++++++++++
>  include/linux/netdevice.h |   29 +++++++-
>  kernel/irq/manage.c       |  170 +++++++++++++++++++++++++++++++++++++++++++++
>  net/core/dev.c            |   88 ++++++++++++++++++++++--
>  7 files changed, 488 insertions(+), 18 deletions(-)
>
> --
> 1.7.2.1
>
>
> --
> Ben Hutchings, Senior Software Engineer, Solarflare Communications
> Not speaking for my employer; that's the marketing department's job.
> They asked us to note that Solarflare product names are trademarked.
>
>
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