netdev - Re: [PATCH v2] RPS: Sparse connection optimizations

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Date:	Fri, 04 May 2012 17:47:28 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Tom Herbert <therbert@...gle.com>
Cc:	Deng-Cheng Zhu <dczhu@...s.com>, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCH v2] RPS: Sparse connection optimizations - v2

On Fri, 2012-05-04 at 08:31 -0700, Tom Herbert wrote:
> > I think the mechanisms of rps_dev_flow_table and cpu_flow (in this
> > patch) are different: The former works along with rps_sock_flow_table
> > whose CPU info is based on recvmsg by the application. But for the tests
> > like what I did, there's no application involved.
> >
> While rps_sock_flow_table is currently only managed by recvmsg, it
> still is the general mechanism that maps flows to CPUs for steering.
> There should be nothing preventing you from populating and managing
> entries in other ways.

It might be done from a netfilter module, activated in FORWARD chain for
example.



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