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Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls


From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH 6/7] virtio-net: Add new RX filter controls
Date: Mon, 08 Jun 2009 14:18:04 -0500
User-agent: Thunderbird 2.0.0.21 (X11/20090320)

Alex Williamson wrote:
e1000 also allows the driver to selectively enable/disable RX of
packets to the broadcast address.  This is replicated with the
all/no-bcast options.  Finally, there may be cases where we want to
receive only unicast or only multicast address for special purpose
network devices.  This is provided by the nouni and nomulti options.
A proprietary guest know as DMX intends to make use of these extra
modes.  Are there any other interesting, useful and lightweight packet
filters we could implement?  Thanks,

I've been thinking about whether doing VLAN filtering/tagging within QEMU would make sense. It could potentially simplify bridge setups tremendously. Today, if you want to isolate VMs on separate vlans, it involves creating multiple bridges which gets ugly quickly.

Of course, for that to be useful, it should happen at the generic networking layer in QEMU, not specific to virtio-net.

Regards,

Anthony Liguori

Alex







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