vhost-vsock: add virtio sockets device
Implement the new virtio sockets device for host<->guest communication using the Sockets API. Most of the work is done in a vhost kernel driver so that virtio-vsock can hook into the AF_VSOCK address family. The QEMU vhost-vsock device handles configuration and live migration while the rx/tx happens in the vhost_vsock.ko Linux kernel driver. The vsock device must be given a CID (host-wide unique address): # qemu -device vhost-vsock-pci,id=vhost-vsock-pci0,guest-cid=3 ... For more information see: http://qemu-project.org/Features/VirtioVsock [Endianness fixes and virtio-ccw support by Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>] Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> [mst: rebase to master] Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefan Hajnoczi
Michael S. Tsirkin
parent
947b205fdb
commit
fc0b9b0e1c
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@ -229,6 +229,7 @@ xfs=""
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vhost_net="no"
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vhost_scsi="no"
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vhost_vsock="no"
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kvm="no"
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rdma=""
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gprof="no"
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@ -674,6 +675,7 @@ Haiku)
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kvm="yes"
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vhost_net="yes"
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vhost_scsi="yes"
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vhost_vsock="yes"
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QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers $QEMU_INCLUDES"
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;;
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esac
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@ -1017,6 +1019,10 @@ for opt do
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;;
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--enable-vhost-scsi) vhost_scsi="yes"
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;;
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--disable-vhost-vsock) vhost_vsock="no"
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;;
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--enable-vhost-vsock) vhost_vsock="yes"
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;;
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--disable-opengl) opengl="no"
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;;
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--enable-opengl) opengl="yes"
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@ -4883,6 +4889,7 @@ echo "uuid support $uuid"
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echo "libcap-ng support $cap_ng"
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echo "vhost-net support $vhost_net"
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echo "vhost-scsi support $vhost_scsi"
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echo "vhost-vsock support $vhost_vsock"
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echo "Trace backends $trace_backends"
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if have_backend "simple"; then
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echo "Trace output file $trace_file-<pid>"
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@ -5264,6 +5271,9 @@ fi
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if test "$vhost_net" = "yes" ; then
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echo "CONFIG_VHOST_NET_USED=y" >> $config_host_mak
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fi
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if test "$vhost_vsock" = "yes" ; then
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echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
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fi
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if test "$blobs" = "yes" ; then
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echo "INSTALL_BLOBS=yes" >> $config_host_mak
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fi
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@ -1658,6 +1658,57 @@ static const TypeInfo virtio_ccw_9p_info = {
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};
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#endif
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#ifdef CONFIG_VHOST_VSOCK
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static Property vhost_vsock_ccw_properties[] = {
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DEFINE_PROP_CSS_DEV_ID("devno", VirtioCcwDevice, parent_obj.bus_id),
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DEFINE_PROP_UINT32("max_revision", VirtioCcwDevice, max_rev,
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VIRTIO_CCW_MAX_REV),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void vhost_vsock_ccw_realize(VirtioCcwDevice *ccw_dev, Error **errp)
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{
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VHostVSockCCWState *dev = VHOST_VSOCK_CCW(ccw_dev);
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DeviceState *vdev = DEVICE(&dev->vdev);
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Error *err = NULL;
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qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
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object_property_set_bool(OBJECT(vdev), true, "realized", &err);
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if (err) {
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error_propagate(errp, err);
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}
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}
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static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
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k->realize = vhost_vsock_ccw_realize;
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k->exit = virtio_ccw_exit;
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set_bit(DEVICE_CATEGORY_MISC, dc->categories);
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dc->props = vhost_vsock_ccw_properties;
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dc->reset = virtio_ccw_reset;
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}
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static void vhost_vsock_ccw_instance_init(Object *obj)
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{
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VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
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virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
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TYPE_VHOST_VSOCK);
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}
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static const TypeInfo vhost_vsock_ccw_info = {
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.name = TYPE_VHOST_VSOCK_CCW,
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.parent = TYPE_VIRTIO_CCW_DEVICE,
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.instance_size = sizeof(VHostVSockCCWState),
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.instance_init = vhost_vsock_ccw_instance_init,
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.class_init = vhost_vsock_ccw_class_init,
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};
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#endif
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static void virtio_ccw_register(void)
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{
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type_register_static(&virtio_ccw_bus_info);
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@ -1674,6 +1725,9 @@ static void virtio_ccw_register(void)
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#ifdef CONFIG_VIRTFS
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type_register_static(&virtio_ccw_9p_info);
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#endif
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#ifdef CONFIG_VHOST_VSOCK
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type_register_static(&vhost_vsock_ccw_info);
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#endif
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}
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type_init(virtio_ccw_register)
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@ -23,6 +23,9 @@
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#include "hw/virtio/virtio-balloon.h"
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#include "hw/virtio/virtio-rng.h"
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#include "hw/virtio/virtio-bus.h"
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#ifdef CONFIG_VHOST_VSOCK
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#include "hw/virtio/vhost-vsock.h"
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#endif /* CONFIG_VHOST_VSOCK */
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#include "hw/s390x/s390_flic.h"
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#include "hw/s390x/css.h"
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@ -197,4 +200,16 @@ typedef struct V9fsCCWState {
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#endif /* CONFIG_VIRTFS */
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#ifdef CONFIG_VHOST_VSOCK
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#define TYPE_VHOST_VSOCK_CCW "vhost-vsock-ccw"
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#define VHOST_VSOCK_CCW(obj) \
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OBJECT_CHECK(VHostVSockCCWState, (obj), TYPE_VHOST_VSOCK_CCW)
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typedef struct VHostVSockCCWState {
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VirtioCcwDevice parent_obj;
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VHostVSock vdev;
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} VHostVSockCCWState;
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#endif /* CONFIG_VHOST_VSOCK */
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#endif
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@ -5,3 +5,5 @@ common-obj-y += virtio-mmio.o
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obj-y += virtio.o virtio-balloon.o
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obj-$(CONFIG_LINUX) += vhost.o vhost-backend.o vhost-user.o
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obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o
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@ -172,6 +172,19 @@ static int vhost_kernel_get_vq_index(struct vhost_dev *dev, int idx)
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return idx - dev->vq_index;
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}
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#ifdef CONFIG_VHOST_VSOCK
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static int vhost_kernel_vsock_set_guest_cid(struct vhost_dev *dev,
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uint64_t guest_cid)
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{
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return vhost_kernel_call(dev, VHOST_VSOCK_SET_GUEST_CID, &guest_cid);
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}
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static int vhost_kernel_vsock_set_running(struct vhost_dev *dev, int start)
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{
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return vhost_kernel_call(dev, VHOST_VSOCK_SET_RUNNING, &start);
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}
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#endif /* CONFIG_VHOST_VSOCK */
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static const VhostOps kernel_ops = {
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.backend_type = VHOST_BACKEND_TYPE_KERNEL,
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.vhost_backend_init = vhost_kernel_init,
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@ -197,6 +210,10 @@ static const VhostOps kernel_ops = {
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.vhost_set_owner = vhost_kernel_set_owner,
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.vhost_reset_device = vhost_kernel_reset_device,
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.vhost_get_vq_index = vhost_kernel_get_vq_index,
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#ifdef CONFIG_VHOST_VSOCK
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.vhost_vsock_set_guest_cid = vhost_kernel_vsock_set_guest_cid,
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.vhost_vsock_set_running = vhost_kernel_vsock_set_running,
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#endif /* CONFIG_VHOST_VSOCK */
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};
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int vhost_set_backend_type(struct vhost_dev *dev, VhostBackendType backend_type)
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@ -0,0 +1,417 @@
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/*
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* Virtio vsock device
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*
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* Copyright 2015 Red Hat, Inc.
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*
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* Authors:
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* Stefan Hajnoczi <stefanha@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#include <sys/ioctl.h>
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#include "qemu/osdep.h"
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#include "standard-headers/linux/virtio_vsock.h"
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#include "qapi/error.h"
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#include "hw/virtio/virtio-bus.h"
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#include "hw/virtio/virtio-access.h"
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#include "migration/migration.h"
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#include "qemu/error-report.h"
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#include "hw/virtio/vhost-vsock.h"
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#include "qemu/iov.h"
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#include "monitor/monitor.h"
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enum {
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VHOST_VSOCK_SAVEVM_VERSION = 0,
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VHOST_VSOCK_QUEUE_SIZE = 128,
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};
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static void vhost_vsock_get_config(VirtIODevice *vdev, uint8_t *config)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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struct virtio_vsock_config vsockcfg = {};
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virtio_stq_p(vdev, &vsockcfg.guest_cid, vsock->conf.guest_cid);
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memcpy(config, &vsockcfg, sizeof(vsockcfg));
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}
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static int vhost_vsock_set_guest_cid(VHostVSock *vsock)
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{
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const VhostOps *vhost_ops = vsock->vhost_dev.vhost_ops;
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int ret;
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if (!vhost_ops->vhost_vsock_set_guest_cid) {
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return -ENOSYS;
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}
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ret = vhost_ops->vhost_vsock_set_guest_cid(&vsock->vhost_dev,
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vsock->conf.guest_cid);
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if (ret < 0) {
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return -errno;
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}
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return 0;
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}
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static int vhost_vsock_set_running(VHostVSock *vsock, int start)
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{
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const VhostOps *vhost_ops = vsock->vhost_dev.vhost_ops;
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int ret;
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if (!vhost_ops->vhost_vsock_set_running) {
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return -ENOSYS;
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}
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ret = vhost_ops->vhost_vsock_set_running(&vsock->vhost_dev, start);
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if (ret < 0) {
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return -errno;
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}
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return 0;
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}
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static void vhost_vsock_start(VirtIODevice *vdev)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
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VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
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int ret;
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int i;
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if (!k->set_guest_notifiers) {
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error_report("binding does not support guest notifiers");
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return;
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}
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ret = vhost_dev_enable_notifiers(&vsock->vhost_dev, vdev);
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if (ret < 0) {
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error_report("Error enabling host notifiers: %d", -ret);
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return;
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}
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ret = k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, true);
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if (ret < 0) {
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error_report("Error binding guest notifier: %d", -ret);
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goto err_host_notifiers;
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}
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vsock->vhost_dev.acked_features = vdev->guest_features;
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ret = vhost_dev_start(&vsock->vhost_dev, vdev);
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if (ret < 0) {
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error_report("Error starting vhost: %d", -ret);
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goto err_guest_notifiers;
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}
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ret = vhost_vsock_set_running(vsock, 1);
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if (ret < 0) {
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error_report("Error starting vhost vsock: %d", -ret);
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goto err_dev_start;
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}
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/* guest_notifier_mask/pending not used yet, so just unmask
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* everything here. virtio-pci will do the right thing by
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* enabling/disabling irqfd.
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*/
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for (i = 0; i < vsock->vhost_dev.nvqs; i++) {
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vhost_virtqueue_mask(&vsock->vhost_dev, vdev, i, false);
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}
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return;
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err_dev_start:
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vhost_dev_stop(&vsock->vhost_dev, vdev);
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err_guest_notifiers:
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k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, false);
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err_host_notifiers:
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vhost_dev_disable_notifiers(&vsock->vhost_dev, vdev);
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}
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static void vhost_vsock_stop(VirtIODevice *vdev)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
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VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
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int ret;
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if (!k->set_guest_notifiers) {
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return;
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}
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ret = vhost_vsock_set_running(vsock, 0);
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if (ret < 0) {
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error_report("vhost vsock set running failed: %d", ret);
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return;
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}
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vhost_dev_stop(&vsock->vhost_dev, vdev);
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ret = k->set_guest_notifiers(qbus->parent, vsock->vhost_dev.nvqs, false);
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if (ret < 0) {
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error_report("vhost guest notifier cleanup failed: %d", ret);
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return;
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}
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vhost_dev_disable_notifiers(&vsock->vhost_dev, vdev);
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}
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static void vhost_vsock_set_status(VirtIODevice *vdev, uint8_t status)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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bool should_start = status & VIRTIO_CONFIG_S_DRIVER_OK;
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if (!vdev->vm_running) {
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should_start = false;
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}
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if (vsock->vhost_dev.started == should_start) {
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return;
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}
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if (should_start) {
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vhost_vsock_start(vdev);
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} else {
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vhost_vsock_stop(vdev);
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}
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}
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static uint64_t vhost_vsock_get_features(VirtIODevice *vdev,
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uint64_t requested_features,
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Error **errp)
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{
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/* No feature bits used yet */
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return requested_features;
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}
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static void vhost_vsock_handle_output(VirtIODevice *vdev, VirtQueue *vq)
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{
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/* Do nothing */
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}
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static void vhost_vsock_guest_notifier_mask(VirtIODevice *vdev, int idx,
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bool mask)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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vhost_virtqueue_mask(&vsock->vhost_dev, vdev, idx, mask);
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}
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static bool vhost_vsock_guest_notifier_pending(VirtIODevice *vdev, int idx)
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{
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VHostVSock *vsock = VHOST_VSOCK(vdev);
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return vhost_virtqueue_pending(&vsock->vhost_dev, idx);
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}
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static void vhost_vsock_send_transport_reset(VHostVSock *vsock)
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{
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VirtQueueElement *elem;
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VirtQueue *vq = vsock->event_vq;
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struct virtio_vsock_event event = {
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.id = cpu_to_le32(VIRTIO_VSOCK_EVENT_TRANSPORT_RESET),
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};
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elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
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if (!elem) {
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error_report("vhost-vsock missed transport reset event");
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return;
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}
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if (elem->out_num) {
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error_report("invalid vhost-vsock event virtqueue element with "
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"out buffers");
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goto out;
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}
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if (iov_from_buf(elem->in_sg, elem->in_num, 0,
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&event, sizeof(event)) != sizeof(event)) {
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error_report("vhost-vsock event virtqueue element is too short");
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goto out;
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}
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virtqueue_push(vq, elem, sizeof(event));
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virtio_notify(VIRTIO_DEVICE(vsock), vq);
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out:
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g_free(elem);
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}
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static void vhost_vsock_save(QEMUFile *f, void *opaque, size_t size)
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{
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VHostVSock *vsock = opaque;
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VirtIODevice *vdev = VIRTIO_DEVICE(vsock);
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/* At this point, backend must be stopped, otherwise
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* it might keep writing to memory. */
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assert(!vsock->vhost_dev.started);
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virtio_save(vdev, f);
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}
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|
||||
static void vhost_vsock_post_load_timer_cleanup(VHostVSock *vsock)
|
||||
{
|
||||
if (!vsock->post_load_timer) {
|
||||
return;
|
||||
}
|
||||
|
||||
timer_del(vsock->post_load_timer);
|
||||
timer_free(vsock->post_load_timer);
|
||||
vsock->post_load_timer = NULL;
|
||||
}
|
||||
|
||||
static void vhost_vsock_post_load_timer_cb(void *opaque)
|
||||
{
|
||||
VHostVSock *vsock = opaque;
|
||||
|
||||
vhost_vsock_post_load_timer_cleanup(vsock);
|
||||
vhost_vsock_send_transport_reset(vsock);
|
||||
}
|
||||
|
||||
static int vhost_vsock_load(QEMUFile *f, void *opaque, size_t size)
|
||||
{
|
||||
VHostVSock *vsock = opaque;
|
||||
VirtIODevice *vdev = VIRTIO_DEVICE(vsock);
|
||||
int ret;
|
||||
|
||||
ret = virtio_load(vdev, f, VHOST_VSOCK_SAVEVM_VERSION);
|
||||
if (ret) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (virtio_queue_get_addr(vdev, 2)) {
|
||||
/* Defer transport reset event to a vm clock timer so that virtqueue
|
||||
* changes happen after migration has completed.
|
||||
*/
|
||||
assert(!vsock->post_load_timer);
|
||||
vsock->post_load_timer =
|
||||
timer_new_ns(QEMU_CLOCK_VIRTUAL,
|
||||
vhost_vsock_post_load_timer_cb,
|
||||
vsock);
|
||||
timer_mod(vsock->post_load_timer, 1);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
VMSTATE_VIRTIO_DEVICE(vhost_vsock, VHOST_VSOCK_SAVEVM_VERSION,
|
||||
vhost_vsock_load, vhost_vsock_save);
|
||||
|
||||
static void vhost_vsock_device_realize(DeviceState *dev, Error **errp)
|
||||
{
|
||||
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
|
||||
VHostVSock *vsock = VHOST_VSOCK(dev);
|
||||
int vhostfd;
|
||||
int ret;
|
||||
|
||||
/* Refuse to use reserved CID numbers */
|
||||
if (vsock->conf.guest_cid <= 2) {
|
||||
error_setg(errp, "guest-cid property must be greater than 2");
|
||||
return;
|
||||
}
|
||||
|
||||
if (vsock->conf.guest_cid > UINT32_MAX) {
|
||||
error_setg(errp, "guest-cid property must be a 32-bit number");
|
||||
return;
|
||||
}
|
||||
|
||||
if (vsock->conf.vhostfd) {
|
||||
vhostfd = monitor_fd_param(cur_mon, vsock->conf.vhostfd, errp);
|
||||
if (vhostfd == -1) {
|
||||
error_prepend(errp, "vhost-vsock: unable to parse vhostfd: ");
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
vhostfd = open("/dev/vhost-vsock", O_RDWR);
|
||||
if (vhostfd < 0) {
|
||||
error_setg_errno(errp, -errno,
|
||||
"vhost-vsock: failed to open vhost device");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
virtio_init(vdev, "vhost-vsock", VIRTIO_ID_VSOCK,
|
||||
sizeof(struct virtio_vsock_config));
|
||||
|
||||
/* Receive and transmit queues belong to vhost */
|
||||
virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, vhost_vsock_handle_output);
|
||||
virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE, vhost_vsock_handle_output);
|
||||
|
||||
/* The event queue belongs to QEMU */
|
||||
vsock->event_vq = virtio_add_queue(vdev, VHOST_VSOCK_QUEUE_SIZE,
|
||||
vhost_vsock_handle_output);
|
||||
|
||||
vsock->vhost_dev.nvqs = ARRAY_SIZE(vsock->vhost_vqs);
|
||||
vsock->vhost_dev.vqs = vsock->vhost_vqs;
|
||||
ret = vhost_dev_init(&vsock->vhost_dev, (void *)(uintptr_t)vhostfd,
|
||||
VHOST_BACKEND_TYPE_KERNEL, 0);
|
||||
if (ret < 0) {
|
||||
error_setg_errno(errp, -ret, "vhost-vsock: vhost_dev_init failed");
|
||||
goto err_virtio;
|
||||
}
|
||||
|
||||
ret = vhost_vsock_set_guest_cid(vsock);
|
||||
if (ret < 0) {
|
||||
error_setg_errno(errp, -ret, "vhost-vsock: unable to set guest cid");
|
||||
goto err_vhost_dev;
|
||||
}
|
||||
|
||||
vsock->post_load_timer = NULL;
|
||||
return;
|
||||
|
||||
err_vhost_dev:
|
||||
vhost_dev_cleanup(&vsock->vhost_dev);
|
||||
err_virtio:
|
||||
virtio_cleanup(vdev);
|
||||
close(vhostfd);
|
||||
return;
|
||||
}
|
||||
|
||||
static void vhost_vsock_device_unrealize(DeviceState *dev, Error **errp)
|
||||
{
|
||||
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
|
||||
VHostVSock *vsock = VHOST_VSOCK(dev);
|
||||
|
||||
vhost_vsock_post_load_timer_cleanup(vsock);
|
||||
|
||||
/* This will stop vhost backend if appropriate. */
|
||||
vhost_vsock_set_status(vdev, 0);
|
||||
|
||||
vhost_dev_cleanup(&vsock->vhost_dev);
|
||||
virtio_cleanup(vdev);
|
||||
}
|
||||
|
||||
static Property vhost_vsock_properties[] = {
|
||||
DEFINE_PROP_UINT64("guest-cid", VHostVSock, conf.guest_cid, 0),
|
||||
DEFINE_PROP_STRING("vhostfd", VHostVSock, conf.vhostfd),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void vhost_vsock_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
|
||||
|
||||
dc->props = vhost_vsock_properties;
|
||||
dc->vmsd = &vmstate_virtio_vhost_vsock;
|
||||
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
|
||||
vdc->realize = vhost_vsock_device_realize;
|
||||
vdc->unrealize = vhost_vsock_device_unrealize;
|
||||
vdc->get_features = vhost_vsock_get_features;
|
||||
vdc->get_config = vhost_vsock_get_config;
|
||||
vdc->set_status = vhost_vsock_set_status;
|
||||
vdc->guest_notifier_mask = vhost_vsock_guest_notifier_mask;
|
||||
vdc->guest_notifier_pending = vhost_vsock_guest_notifier_pending;
|
||||
}
|
||||
|
||||
static const TypeInfo vhost_vsock_info = {
|
||||
.name = TYPE_VHOST_VSOCK,
|
||||
.parent = TYPE_VIRTIO_DEVICE,
|
||||
.instance_size = sizeof(VHostVSock),
|
||||
.class_init = vhost_vsock_class_init,
|
||||
};
|
||||
|
||||
static void vhost_vsock_register_types(void)
|
||||
{
|
||||
type_register_static(&vhost_vsock_info);
|
||||
}
|
||||
|
||||
type_init(vhost_vsock_register_types)
|
||||
|
|
@ -2071,6 +2071,54 @@ static const TypeInfo vhost_scsi_pci_info = {
|
|||
};
|
||||
#endif
|
||||
|
||||
/* vhost-vsock-pci */
|
||||
|
||||
#ifdef CONFIG_VHOST_VSOCK
|
||||
static Property vhost_vsock_pci_properties[] = {
|
||||
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
|
||||
DEFINE_PROP_END_OF_LIST(),
|
||||
};
|
||||
|
||||
static void vhost_vsock_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
|
||||
{
|
||||
VHostVSockPCI *dev = VHOST_VSOCK_PCI(vpci_dev);
|
||||
DeviceState *vdev = DEVICE(&dev->vdev);
|
||||
|
||||
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
|
||||
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
|
||||
}
|
||||
|
||||
static void vhost_vsock_pci_class_init(ObjectClass *klass, void *data)
|
||||
{
|
||||
DeviceClass *dc = DEVICE_CLASS(klass);
|
||||
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
|
||||
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
|
||||
k->realize = vhost_vsock_pci_realize;
|
||||
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
|
||||
dc->props = vhost_vsock_pci_properties;
|
||||
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
|
||||
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_VSOCK;
|
||||
pcidev_k->revision = 0x00;
|
||||
pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
|
||||
}
|
||||
|
||||
static void vhost_vsock_pci_instance_init(Object *obj)
|
||||
{
|
||||
VHostVSockPCI *dev = VHOST_VSOCK_PCI(obj);
|
||||
|
||||
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
|
||||
TYPE_VHOST_VSOCK);
|
||||
}
|
||||
|
||||
static const TypeInfo vhost_vsock_pci_info = {
|
||||
.name = TYPE_VHOST_VSOCK_PCI,
|
||||
.parent = TYPE_VIRTIO_PCI,
|
||||
.instance_size = sizeof(VHostVSockPCI),
|
||||
.instance_init = vhost_vsock_pci_instance_init,
|
||||
.class_init = vhost_vsock_pci_class_init,
|
||||
};
|
||||
#endif
|
||||
|
||||
/* virtio-balloon-pci */
|
||||
|
||||
static Property virtio_balloon_pci_properties[] = {
|
||||
|
|
@ -2501,6 +2549,9 @@ static void virtio_pci_register_types(void)
|
|||
#ifdef CONFIG_VHOST_SCSI
|
||||
type_register_static(&vhost_scsi_pci_info);
|
||||
#endif
|
||||
#ifdef CONFIG_VHOST_VSOCK
|
||||
type_register_static(&vhost_vsock_pci_info);
|
||||
#endif
|
||||
}
|
||||
|
||||
type_init(virtio_pci_register_types)
|
||||
|
|
|
|||
|
|
@ -31,6 +31,9 @@
|
|||
#ifdef CONFIG_VHOST_SCSI
|
||||
#include "hw/virtio/vhost-scsi.h"
|
||||
#endif
|
||||
#ifdef CONFIG_VHOST_VSOCK
|
||||
#include "hw/virtio/vhost-vsock.h"
|
||||
#endif
|
||||
|
||||
typedef struct VirtIOPCIProxy VirtIOPCIProxy;
|
||||
typedef struct VirtIOBlkPCI VirtIOBlkPCI;
|
||||
|
|
@ -44,6 +47,7 @@ typedef struct VirtIOInputPCI VirtIOInputPCI;
|
|||
typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
|
||||
typedef struct VirtIOInputHostPCI VirtIOInputHostPCI;
|
||||
typedef struct VirtIOGPUPCI VirtIOGPUPCI;
|
||||
typedef struct VHostVSockPCI VHostVSockPCI;
|
||||
|
||||
/* virtio-pci-bus */
|
||||
|
||||
|
|
@ -329,6 +333,20 @@ struct VirtIOGPUPCI {
|
|||
VirtIOGPU vdev;
|
||||
};
|
||||
|
||||
#ifdef CONFIG_VHOST_VSOCK
|
||||
/*
|
||||
* vhost-vsock-pci: This extends VirtioPCIProxy.
|
||||
*/
|
||||
#define TYPE_VHOST_VSOCK_PCI "vhost-vsock-pci"
|
||||
#define VHOST_VSOCK_PCI(obj) \
|
||||
OBJECT_CHECK(VHostVSockPCI, (obj), TYPE_VHOST_VSOCK_PCI)
|
||||
|
||||
struct VHostVSockPCI {
|
||||
VirtIOPCIProxy parent_obj;
|
||||
VHostVSock vdev;
|
||||
};
|
||||
#endif
|
||||
|
||||
/* Virtio ABI version, if we increment this, we break the guest driver. */
|
||||
#define VIRTIO_PCI_ABI_VERSION 0
|
||||
|
||||
|
|
|
|||
|
|
@ -79,6 +79,7 @@
|
|||
#define PCI_DEVICE_ID_VIRTIO_SCSI 0x1004
|
||||
#define PCI_DEVICE_ID_VIRTIO_RNG 0x1005
|
||||
#define PCI_DEVICE_ID_VIRTIO_9P 0x1009
|
||||
#define PCI_DEVICE_ID_VIRTIO_VSOCK 0x1012
|
||||
|
||||
#define PCI_VENDOR_ID_REDHAT 0x1b36
|
||||
#define PCI_DEVICE_ID_REDHAT_BRIDGE 0x0001
|
||||
|
|
|
|||
|
|
@ -73,6 +73,9 @@ typedef int (*vhost_migration_done_op)(struct vhost_dev *dev,
|
|||
typedef bool (*vhost_backend_can_merge_op)(struct vhost_dev *dev,
|
||||
uint64_t start1, uint64_t size1,
|
||||
uint64_t start2, uint64_t size2);
|
||||
typedef int (*vhost_vsock_set_guest_cid_op)(struct vhost_dev *dev,
|
||||
uint64_t guest_cid);
|
||||
typedef int (*vhost_vsock_set_running_op)(struct vhost_dev *dev, int start);
|
||||
|
||||
typedef struct VhostOps {
|
||||
VhostBackendType backend_type;
|
||||
|
|
@ -102,6 +105,8 @@ typedef struct VhostOps {
|
|||
vhost_requires_shm_log_op vhost_requires_shm_log;
|
||||
vhost_migration_done_op vhost_migration_done;
|
||||
vhost_backend_can_merge_op vhost_backend_can_merge;
|
||||
vhost_vsock_set_guest_cid_op vhost_vsock_set_guest_cid;
|
||||
vhost_vsock_set_running_op vhost_vsock_set_running;
|
||||
} VhostOps;
|
||||
|
||||
extern const VhostOps user_ops;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,41 @@
|
|||
/*
|
||||
* Vhost vsock virtio device
|
||||
*
|
||||
* Copyright 2015 Red Hat, Inc.
|
||||
*
|
||||
* Authors:
|
||||
* Stefan Hajnoczi <stefanha@redhat.com>
|
||||
*
|
||||
* This work is licensed under the terms of the GNU GPL, version 2 or
|
||||
* (at your option) any later version. See the COPYING file in the
|
||||
* top-level directory.
|
||||
*/
|
||||
|
||||
#ifndef _QEMU_VHOST_VSOCK_H
|
||||
#define _QEMU_VHOST_VSOCK_H
|
||||
|
||||
#include "hw/virtio/virtio.h"
|
||||
#include "hw/virtio/vhost.h"
|
||||
|
||||
#define TYPE_VHOST_VSOCK "vhost-vsock-device"
|
||||
#define VHOST_VSOCK(obj) \
|
||||
OBJECT_CHECK(VHostVSock, (obj), TYPE_VHOST_VSOCK)
|
||||
|
||||
typedef struct {
|
||||
uint64_t guest_cid;
|
||||
char *vhostfd;
|
||||
} VHostVSockConf;
|
||||
|
||||
typedef struct {
|
||||
/*< private >*/
|
||||
VirtIODevice parent;
|
||||
VHostVSockConf conf;
|
||||
struct vhost_virtqueue vhost_vqs[2];
|
||||
struct vhost_dev vhost_dev;
|
||||
VirtQueue *event_vq;
|
||||
QEMUTimer *post_load_timer;
|
||||
|
||||
/*< public >*/
|
||||
} VHostVSock;
|
||||
|
||||
#endif /* _QEMU_VHOST_VSOCK_H */
|
||||
Loading…
Reference in New Issue