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Date: Mon, 14 May 2012 21:39:30 +0300 From: "Michael S. Tsirkin" <mst@...hat.com> To: Shirley Ma <mashirle@...ibm.com> Cc: "David S. Miller" <davem@...emloft.net>, Stephen Hemminger <shemminger@...tta.com>, Joe Perches <joe@...ches.com>, Jason Wang <jasowang@...hat.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Ian.Campbell@...rix.com, kvm@...r.kernel.org Subject: Re: [PATCH RFC] tun: experimental zero copy tx support On Mon, May 14, 2012 at 10:34:50AM -0700, Shirley Ma wrote: > On Sun, 2012-05-13 at 18:52 +0300, Michael S. Tsirkin wrote: > > Let vhost-net utilize zero copy tx when the experimental > > zero copy mode is enabled and when used with tun. This works on > > top of the patchset 'copy aside frags with destructors' that I posted > > previously. This is not using tcp so doesn't have the > > issue with early skb cloning noticed by Ian. > > > > For those that wish to test this with kvm, I intend to post a patchset > > + > > git tree with just the necessary bits from the destructor patch > > a bit later. > > > > Signed-off-by: Michael S. Tsirkin <mst@...hat.com> > > Hello Mike, > > Have you tested this patch? I think the difference between macvtap and > tap is tap forwarding the packet to bridge. The zerocopy is disabled in > this case. > > Shirley Testing in progress, but the patchset I pointed to enables zerocopy with bridge. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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