Messages in this thread | | | Date | Sun, 15 Apr 2012 03:20:03 -0400 (EDT) | Subject | Re: [net-next V7 PATCH] virtio-net: send gratuitous packets when needed | From | David Miller <> |
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From: "Michael S. Tsirkin" <mst@redhat.com> Date: Sun, 15 Apr 2012 10:12:23 +0300
> On Thu, Apr 12, 2012 at 02:43:52PM +0800, Jason Wang wrote: >> As hypervior does not have the knowledge of guest network configuration, it's >> better to ask guest to send gratuitous packets when needed. >> >> This patch implements VIRTIO_NET_F_GUEST_ANNOUNCE feature: hypervisor would >> notice the guest when it thinks it's time for guest to announce the link >> presnece. Guest tests VIRTIO_NET_S_ANNOUNCE bit during config change interrupt >> and woule send gratuitous packets through netif_notify_peers() and ack the >> notification through ctrl vq. >> >> We need to make sure the atomicy of read and ack in guest otherwise we may ack >> more times than being notified. This is done through handling the whole config >> change interrupt in an non-reentrant workqueue. >> >> Signed-off-by: Jason Wang <jasowang@redhat.com> > > Acked-by: Michael S. Tsirkin <mst@redhat.com>
Applied, thanks everyone.
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