--- /dev/null
+/*
+ * libqos driver framework
+ *
+ * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2 as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+
+#include "qemu/osdep.h"
+#include "libqtest.h"
+#include "libqos/qgraph.h"
+#include "libqos/virtio-net.h"
+#include "hw/virtio/virtio-net.h"
+
+
+static QGuestAllocator *alloc;
+
+static void virtio_net_cleanup(QVirtioNet *interface)
+{
+ qvirtqueue_cleanup(interface->vdev->bus, interface->rx, alloc);
+ qvirtqueue_cleanup(interface->vdev->bus, interface->tx, alloc);
+}
+
+static void virtio_net_setup(QVirtioNet *interface)
+{
+ QVirtioDevice *vdev = interface->vdev;
+ uint64_t features;
+
+ features = qvirtio_get_features(vdev);
+ features &= ~(QVIRTIO_F_BAD_FEATURE |
+ (1u << VIRTIO_RING_F_INDIRECT_DESC) |
+ (1u << VIRTIO_RING_F_EVENT_IDX));
+ qvirtio_set_features(vdev, features);
+
+ interface->rx = qvirtqueue_setup(vdev, alloc, 0);
+ interface->tx = qvirtqueue_setup(vdev, alloc, 1);
+ qvirtio_set_driver_ok(vdev);
+}
+
+/* virtio-net-device */
+static void qvirtio_net_device_destructor(QOSGraphObject *obj)
+{
+ QVirtioNetDevice *v_net = (QVirtioNetDevice *) obj;
+ virtio_net_cleanup(&v_net->net);
+}
+
+static void qvirtio_net_device_start_hw(QOSGraphObject *obj)
+{
+ QVirtioNetDevice *v_net = (QVirtioNetDevice *) obj;
+ QVirtioNet *interface = &v_net->net;
+
+ virtio_net_setup(interface);
+}
+
+static void *qvirtio_net_get_driver(QVirtioNet *v_net,
+ const char *interface)
+{
+ if (!g_strcmp0(interface, "virtio-net")) {
+ return v_net;
+ }
+ if (!g_strcmp0(interface, "virtio")) {
+ return v_net->vdev;
+ }
+
+ fprintf(stderr, "%s not present in virtio-net-device\n", interface);
+ g_assert_not_reached();
+}
+
+static void *qvirtio_net_device_get_driver(void *object,
+ const char *interface)
+{
+ QVirtioNetDevice *v_net = object;
+ return qvirtio_net_get_driver(&v_net->net, interface);
+}
+
+static void *virtio_net_device_create(void *virtio_dev,
+ QGuestAllocator *t_alloc,
+ void *addr)
+{
+ QVirtioNetDevice *virtio_ndevice = g_new0(QVirtioNetDevice, 1);
+ QVirtioNet *interface = &virtio_ndevice->net;
+
+ interface->vdev = virtio_dev;
+ alloc = t_alloc;
+
+ virtio_ndevice->obj.destructor = qvirtio_net_device_destructor;
+ virtio_ndevice->obj.get_driver = qvirtio_net_device_get_driver;
+ virtio_ndevice->obj.start_hw = qvirtio_net_device_start_hw;
+
+ return &virtio_ndevice->obj;
+}
+
+/* virtio-net-pci */
+static void qvirtio_net_pci_destructor(QOSGraphObject *obj)
+{
+ QVirtioNetPCI *v_net = (QVirtioNetPCI *) obj;
+ QVirtioNet *interface = &v_net->net;
+ QOSGraphObject *pci_vobj = &v_net->pci_vdev.obj;
+
+ virtio_net_cleanup(interface);
+ qvirtio_pci_destructor(pci_vobj);
+}
+
+static void qvirtio_net_pci_start_hw(QOSGraphObject *obj)
+{
+ QVirtioNetPCI *v_net = (QVirtioNetPCI *) obj;
+ QVirtioNet *interface = &v_net->net;
+ QOSGraphObject *pci_vobj = &v_net->pci_vdev.obj;
+
+ qvirtio_pci_start_hw(pci_vobj);
+ virtio_net_setup(interface);
+}
+
+static void *qvirtio_net_pci_get_driver(void *object,
+ const char *interface)
+{
+ QVirtioNetPCI *v_net = object;
+ if (!g_strcmp0(interface, "pci-device")) {
+ return v_net->pci_vdev.pdev;
+ }
+ return qvirtio_net_get_driver(&v_net->net, interface);
+}
+
+static void *virtio_net_pci_create(void *pci_bus, QGuestAllocator *t_alloc,
+ void *addr)
+{
+ QVirtioNetPCI *virtio_bpci = g_new0(QVirtioNetPCI, 1);
+ QVirtioNet *interface = &virtio_bpci->net;
+ QOSGraphObject *obj = &virtio_bpci->pci_vdev.obj;
+
+ virtio_pci_init(&virtio_bpci->pci_vdev, pci_bus, addr);
+ interface->vdev = &virtio_bpci->pci_vdev.vdev;
+ alloc = t_alloc;
+
+ g_assert_cmphex(interface->vdev->device_type, ==, VIRTIO_ID_NET);
+
+ obj->destructor = qvirtio_net_pci_destructor;
+ obj->start_hw = qvirtio_net_pci_start_hw;
+ obj->get_driver = qvirtio_net_pci_get_driver;
+
+ return obj;
+}
+
+static void virtio_net_register_nodes(void)
+{
+ /* FIXME: every test using these nodes needs to setup a
+ * -netdev socket,id=hs0 otherwise QEMU is not going to start.
+ * Therefore, we do not include "produces" edge for virtio
+ * and pci-device yet.
+ */
+ QPCIAddress addr = {
+ .devfn = QPCI_DEVFN(4, 0),
+ };
+
+ QOSGraphEdgeOptions opts = { };
+
+ /* virtio-net-device */
+ opts.extra_device_opts = "netdev=hs0";
+ qos_node_create_driver("virtio-net-device",
+ virtio_net_device_create);
+ qos_node_consumes("virtio-net-device", "virtio-bus", &opts);
+ qos_node_produces("virtio-net-device", "virtio-net");
+
+ /* virtio-net-pci */
+ opts.extra_device_opts = "netdev=hs0,addr=04.0";
+ add_qpci_address(&opts, &addr);
+ qos_node_create_driver("virtio-net-pci", virtio_net_pci_create);
+ qos_node_consumes("virtio-net-pci", "pci-bus", &opts);
+ qos_node_produces("virtio-net-pci", "virtio-net");
+}
+
+libqos_init(virtio_net_register_nodes);