netdev - Re: [PATCH] macvlan: Introduce 'passthru' mode to takeover the underlying device

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Message-Id: <20101122.082441.71132032.davem@davemloft.net>
Date:	Mon, 22 Nov 2010 08:24:41 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	sri@...ibm.com
Cc:	arnd@...db.de, kaber@...sh.net, shemminger@...tta.com,
	mst@...hat.com, netdev@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH] macvlan: Introduce 'passthru' mode to takeover the
 underlying device

From: Sridhar Samudrala <sri@...ibm.com>
Date: Thu, 28 Oct 2010 16:10:50 -0700

> With the current default 'vepa' mode, a KVM guest using virtio with 
> macvtap backend has the following limitations.
> - cannot change/add a mac address on the guest virtio-net
> - cannot create a vlan device on the guest virtio-net
> - cannot enable promiscuous mode on guest virtio-net
> 
> To address these limitations, this patch introduces a new mode called
> 'passthru' when creating a macvlan device which allows takeover of the
> underlying device and passing it to a guest using virtio with macvtap
> backend.
> 
> Only one macvlan device is allowed in passthru mode and it inherits
> the mac address from the underlying device and sets it in promiscuous 
> mode to receive and forward all the packets.
> 
> Signed-off-by: Sridhar Samudrala <sri@...ibm.com>

Applied, thanks Sridhar.
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