From: Wei Liu <wei.liu2@citrix.com>
To: David Vrabel <david.vrabel@citrix.com>
Cc: <wei.liu2@citrix.com>, Ian Campbell <Ian.Campbell@citrix.com>,
"konrad.wilk@oracle.com" <konrad.wilk@oracle.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>
Subject: Re: [Xen-devel] [RFC PATCH 3/6] netback: switch to NAPI + kthread model
Date: Mon, 16 Jan 2012 09:33:14 +0000 [thread overview]
Message-ID: <1326706394.5285.5.camel@liuw-desktop> (raw)
In-Reply-To: <4F107625.7090601@citrix.com>
On Fri, 2012-01-13 at 18:21 +0000, David Vrabel wrote:
> On 13/01/12 16:59, Wei Liu wrote:
> > This patch implements 1:1 model netback. We utilizes NAPI and kthread
> > to do the weight-lifting job:
> >
> > - NAPI is used for guest side TX (host side RX)
> > - kthread is used for guest side RX (host side TX)
> >
> > This model provides better scheduling fairness among vifs. It also
> > lays the foundation for future work.
> >
> > The major defect for the current implementation is that in the NAPI
> > poll handler we don't actually disable interrupt. Xen stuff is
> > different from real hardware, it requires some other tuning of ring
> > macros.
>
> RING_FINAL_CHECK_FOR_REQUESTS() looks it does the correct thing to me.
>
> David
I need to stop the other end from generating events, so
RING_FINAL_CHECK_FOR_REQUESTS is not the right answer I think.
Wei.
next prev parent reply other threads:[~2012-01-16 9:34 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 16:59 [RFC PATCH] New Xen netback implementation Wei Liu
2012-01-13 16:59 ` [RFC PATCH 1/6] netback: page pool version 1 Wei Liu
2012-01-13 17:37 ` Konrad Rzeszutek Wilk
2012-01-16 9:31 ` Wei Liu
2012-01-13 16:59 ` [RFC PATCH 2/6] netback: add module unload function Wei Liu
2012-01-13 17:57 ` [Xen-devel] " David Vrabel
2012-01-16 9:31 ` Wei Liu
2012-01-13 18:47 ` David Vrabel
2012-01-13 16:59 ` [RFC PATCH 3/6] netback: switch to NAPI + kthread model Wei Liu
2012-01-13 18:21 ` [Xen-devel] " David Vrabel
2012-01-16 9:33 ` Wei Liu [this message]
2012-01-16 10:45 ` Ian Campbell
2012-01-16 10:49 ` Wei Liu
2012-01-16 10:56 ` Paul Durrant
2012-01-16 11:09 ` Ian Campbell
2012-01-16 11:46 ` David Vrabel
2012-01-16 10:14 ` Paul Durrant
2012-01-16 10:31 ` Ian Campbell
2012-01-13 16:59 ` [RFC PATCH 4/6] netback: add module get/put operations along with vif connect/disconnect Wei Liu
2012-01-13 18:44 ` [Xen-devel] " David Vrabel
2012-01-16 9:43 ` Wei Liu
2012-01-13 16:59 ` [RFC PATCH 5/6] netback: melt xen_netbk into xenvif Wei Liu
2012-01-13 16:59 ` [RFC PATCH 6/6] netback: alter internal function/structure names Wei Liu
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