From: Arnd Bergmann <arnd@arndb.de>
To: Asias He <asias.hejun@gmail.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Pekka Enberg <penberg@kernel.org>, Ingo Molnar <mingo@elte.hu>,
Amos Kong <akong@redhat.com>,
kvm@vger.kernel.org
Subject: Re: Does macvtap support host to guest communication?
Date: Mon, 18 Apr 2011 12:53:06 +0200 [thread overview]
Message-ID: <201104181253.07023.arnd@arndb.de> (raw)
In-Reply-To: <4DAC109F.1060807@gmail.com>
On Monday 18 April 2011, Asias He wrote:
> (1) Is it possible to add an interface to macvtap like /dev/net/tun,
> eg, /dev/net/macvtap. Currently, it is hard to use macvtap programmatically.
I decided against having a multiplexor device because it makes permission
handling rather hard. One chardev per network interface makes it possible
to handle permissions in multiuser setups.
> (2) Adding another macvlan device(e.g., macvlan0) to the hardware
> interface(e.g., eth0) and using it as the old eth0 make the process of
> using macvtap complicate. One has to reconfigure the network. This is
> not optimal from the user perspective. Is it possible to leave the
> low-level device as is when using the macvtap device?
Only in VEPA mode. Note that a similar restriction applies when using
the bridge device, for the same technical reasons.
Arnd
next prev parent reply other threads:[~2011-04-18 10:53 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-18 6:10 Does macvtap support host to guest communication? Asias He
2011-04-18 6:58 ` Arnd Bergmann
2011-04-18 10:21 ` Asias He
2011-04-18 10:53 ` Arnd Bergmann [this message]
2011-04-18 12:01 ` Ingo Molnar
2011-04-18 13:20 ` Arnd Bergmann
2011-04-18 14:30 ` Asias He
2011-04-18 15:05 ` Arnd Bergmann
2011-04-18 15:28 ` Asias He
2011-04-19 12:14 ` Arnd Bergmann
[not found] ` <BANLkTi=MYexojZrCS_EMuHq+A1=zFyxM6g@mail.gmail.com>
2011-04-21 14:54 ` Arnd Bergmann
2011-04-26 9:34 ` Michael S. Tsirkin
2011-04-18 13:29 ` Michael S. Tsirkin
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