vhost net backend needs to be notified when frontend status changes. Add a callback.
Signed-off-by: Michael S. Tsirkin mst@redhat.com --- hw/s390-virtio-bus.c | 3 +++ hw/syborg_virtio.c | 2 ++ hw/virtio-pci.c | 6 ++++++ hw/virtio.h | 1 + 4 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/hw/s390-virtio-bus.c b/hw/s390-virtio-bus.c index 980e7eb..f45b67d 100644 --- a/hw/s390-virtio-bus.c +++ b/hw/s390-virtio-bus.c @@ -243,6 +243,9 @@ void s390_virtio_device_update_status(VirtIOS390Device *dev) uint32_t features;
vdev->status = ldub_phys(dev->dev_offs + VIRTIO_DEV_OFFS_STATUS); + if (vdev->set_status) { + vdev->set_status(vdev); + }
/* Update guest supported feature bitmap */
diff --git a/hw/syborg_virtio.c b/hw/syborg_virtio.c index 65239a0..19f6473 100644 --- a/hw/syborg_virtio.c +++ b/hw/syborg_virtio.c @@ -152,6 +152,8 @@ static void syborg_virtio_writel(void *opaque, target_phys_addr_t offset, vdev->status = value & 0xFF; if (vdev->status == 0) virtio_reset(vdev); + if (vdev->set_status) + vdev->set_status(vdev); break; case SYBORG_VIRTIO_INT_ENABLE: s->int_enable = value; diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c index 573c98a..05898c8 100644 --- a/hw/virtio-pci.c +++ b/hw/virtio-pci.c @@ -208,6 +208,9 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) virtio_reset(proxy->vdev); msix_unuse_all_vectors(&proxy->pci_dev); } + if (vdev->set_status) { + vdev->set_status(vdev); + } break; case VIRTIO_MSI_CONFIG_VECTOR: msix_vector_unuse(&proxy->pci_dev, vdev->config_vector); @@ -375,6 +378,9 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, if (PCI_COMMAND == address) { if (!(val & PCI_COMMAND_MASTER)) { proxy->vdev->status &= ~VIRTIO_CONFIG_S_DRIVER_OK; + if (proxy->vdev->set_status) { + proxy->vdev->set_status(proxy->vdev); + } } }
diff --git a/hw/virtio.h b/hw/virtio.h index f140ca3..39d0763 100644 --- a/hw/virtio.h +++ b/hw/virtio.h @@ -114,6 +114,7 @@ struct VirtIODevice void (*get_config)(VirtIODevice *vdev, uint8_t *config); void (*set_config)(VirtIODevice *vdev, const uint8_t *config); void (*reset)(VirtIODevice *vdev); + void (*set_status)(VirtIODevice *vdev); VirtQueue *vq; const VirtIOBindings *binding; void *binding_opaque;