qemu/qemu-virtio-add-status-change-callback.patch
2010-02-09 17:10:07 +00:00

77 lines
2.5 KiB
Diff

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;
--
1.6.6.144.g5c3af