From: Shirley Ma <mashirle@us.ibm.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Stephen Hemminger <shemminger@vyatta.com>,
Joe Perches <joe@perches.com>, Jason Wang <jasowang@redhat.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Ian.Campbell@citrix.com, kvm@vger.kernel.org
Subject: Re: [PATCH RFC] tun: experimental zero copy tx support
Date: Mon, 14 May 2012 10:34:50 -0700 [thread overview]
Message-ID: <1337016890.3851.20.camel@oc3660625478.ibm.com> (raw)
In-Reply-To: <20120513155206.GA26847@redhat.com>
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@redhat.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
next prev parent reply other threads:[~2012-05-14 17:34 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-13 15:52 [PATCH RFC] tun: experimental zero copy tx support Michael S. Tsirkin
2012-05-14 16:54 ` Stephen Hemminger
2012-05-14 17:04 ` Michael S. Tsirkin
2012-05-14 19:02 ` Eric Dumazet
2012-05-14 19:14 ` Michael S. Tsirkin
2012-05-14 19:17 ` Michael S. Tsirkin
2012-05-14 19:21 ` Eric Dumazet
2012-05-14 19:31 ` Michael S. Tsirkin
2012-05-15 18:00 ` Shirley Ma
2012-05-14 17:34 ` Shirley Ma [this message]
2012-05-14 18:39 ` Michael S. Tsirkin
2012-05-16 15:16 ` Shirley Ma
2012-05-16 16:51 ` Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1337016890.3851.20.camel@oc3660625478.ibm.com \
--to=mashirle@us.ibm.com \
--cc=Ian.Campbell@citrix.com \
--cc=davem@davemloft.net \
--cc=jasowang@redhat.com \
--cc=joe@perches.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mst@redhat.com \
--cc=netdev@vger.kernel.org \
--cc=shemminger@vyatta.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox