From: "Michael S. Tsirkin" <mst@redhat.com>
To: Shirley Ma <mashirle@us.ibm.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>,
David Miller <davem@davemloft.net>,
Eric Dumazet <eric.dumazet@gmail.com>,
Avi Kivity <avi@redhat.com>, Arnd Bergmann <arnd@arndb.de>,
netdev@vger.kernel.org, kvm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH V5 2/6 net-next] netdevice.h: Add zero-copy flag in netdevice
Date: Tue, 17 May 2011 09:21:11 +0300 [thread overview]
Message-ID: <20110517062111.GD26989@redhat.com> (raw)
In-Reply-To: <1305588738.3456.65.camel@localhost.localdomain>
On Mon, May 16, 2011 at 04:32:18PM -0700, Shirley Ma wrote:
> Hello Michael,
>
> Looks like to use a new flag requires more time/work.
> I am thinking
> whether we can just use HIGHDMA flag to enable zero-copy in macvtap to
> avoid the new flag for now since mavctap uses real NICs as lower device?
>
> Thanks
> Shirley
Problem is, in your patch there are a set of restrictions on what the
device can do with the skb that we need to enforce somehow.
Also, how do we know it's a 'real NIC' and not a software device?
--
MST
next prev parent reply other threads:[~2011-05-17 6:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-16 19:28 [PATCH V5 2/6 net-next] netdevice.h: Add zero-copy flag in netdevice Shirley Ma
2011-05-16 19:35 ` Ben Hutchings
2011-05-16 19:38 ` Shirley Ma
2011-05-16 19:47 ` Ben Hutchings
2011-05-16 21:14 ` Michael S. Tsirkin
2011-05-16 23:32 ` Shirley Ma
2011-05-17 6:21 ` Michael S. Tsirkin [this message]
2011-05-17 20:53 ` Shirley Ma
2011-05-17 21:48 ` Michał Mirosław
2011-05-17 22:28 ` Shirley Ma
2011-05-17 22:58 ` Michał Mirosław
2011-05-17 23:44 ` Shirley Ma
2011-05-18 9:06 ` Michał Mirosław
2011-05-18 10:38 ` Michael S. Tsirkin
2011-05-18 11:10 ` Michał Mirosław
2011-05-18 11:17 ` Michael S. Tsirkin
2011-05-18 11:40 ` Michał Mirosław
2011-05-18 11:47 ` Michael S. Tsirkin
2011-05-18 14:38 ` Shirley Ma
2011-05-18 15:47 ` Michael S. Tsirkin
2011-05-18 16:07 ` Shirley Ma
2011-05-18 16:36 ` Michael S. Tsirkin
2011-05-18 16:45 ` Shirley Ma
2011-05-18 16:51 ` Michael S. Tsirkin
2011-05-18 17:00 ` Shirley Ma
2011-05-19 19:42 ` Shirley Ma
2011-05-19 23:41 ` Michael S. Tsirkin
2011-05-25 22:49 ` Shirley Ma
2011-05-26 8:49 ` Michael S. Tsirkin
2011-05-26 15:27 ` Shirley Ma
2011-05-26 19:11 ` Shirley Ma
2011-05-18 16:02 ` Shirley Ma
2011-05-18 16:23 ` Michael S. Tsirkin
2011-05-18 16:50 ` Michael S. Tsirkin
2011-05-18 11:47 ` Michał Mirosław
2011-05-18 11:56 ` Michael S. Tsirkin
2011-05-18 12:48 ` Michał Mirosław
2011-05-18 13:19 ` Michael S. Tsirkin
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