From: Jason Wang <jasowang@xxxxxxxxxx> Date: Thu, 12 Apr 2012 14:43:52 +0800 > 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@xxxxxxxxxx> Michael, Rusty, et al.? _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
