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| author | Michael S. Tsirkin <mst@redhat.com> | 2012-12-24 17:37:01 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2013-01-07 19:42:23 +0200 |
| commit | f56a12475ff1b8aa61210d08522c3c8aaf0e2648 (patch) | |
| tree | 04ebf83a43ca66048af15b44779578f39f360a8a /hw/virtio-net.c | |
| parent | 24f4fe345c1b80bab1ee18573914123d8028a9e6 (diff) | |
| download | hqemu-f56a12475ff1b8aa61210d08522c3c8aaf0e2648.zip hqemu-f56a12475ff1b8aa61210d08522c3c8aaf0e2648.tar.gz | |
vhost: backend masking support
Support backend guest notifier masking in vhost-net:
create eventfd at device init, when masked,
make vhost use that as eventfd instead of
sending an interrupt.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/virtio-net.c')
| -rw-r--r-- | hw/virtio-net.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/hw/virtio-net.c b/hw/virtio-net.c index b756d57..3bb01b1 100644 --- a/hw/virtio-net.c +++ b/hw/virtio-net.c @@ -1010,6 +1010,22 @@ static NetClientInfo net_virtio_info = { .link_status_changed = virtio_net_set_link_status, }; +static bool virtio_net_guest_notifier_pending(VirtIODevice *vdev, int idx) +{ + VirtIONet *n = to_virtio_net(vdev); + assert(n->vhost_started); + return vhost_net_virtqueue_pending(tap_get_vhost_net(n->nic->nc.peer), idx); +} + +static void virtio_net_guest_notifier_mask(VirtIODevice *vdev, int idx, + bool mask) +{ + VirtIONet *n = to_virtio_net(vdev); + assert(n->vhost_started); + vhost_net_virtqueue_mask(tap_get_vhost_net(n->nic->nc.peer), + vdev, idx, mask); +} + VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf, virtio_net_conf *net) { @@ -1026,6 +1042,8 @@ VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf, n->vdev.bad_features = virtio_net_bad_features; n->vdev.reset = virtio_net_reset; n->vdev.set_status = virtio_net_set_status; + n->vdev.guest_notifier_mask = virtio_net_guest_notifier_mask; + n->vdev.guest_notifier_pending = virtio_net_guest_notifier_pending; n->rx_vq = virtio_add_queue(&n->vdev, 256, virtio_net_handle_rx); if (net->tx && strcmp(net->tx, "timer") && strcmp(net->tx, "bh")) { |
