feat: add vsocket

Signed-off-by: Kevin Klopfenstein <[email protected]>

Author: chifu1234

pkg/machine/qemu/command/command.go

@@ -100,6 +100,14 @@ func (q *QemuCmd) SetDisplay(display string) {
 	*q = append(*q, "-display", display)
 }
 
+func (q *QemuCmd) SetVsocket(vsocket int32) {
+	// must be greater than 2 in default mode
+	if vsocket <= 2 {
+		vsocket = 3
+	}
+	*q = append(*q, "-device", "vhost-vsock-pci,guest-cid="+strconv.Itoa(int(vsocket)))
+}
+
 func (q *QemuCmd) Build() []string {
 	return *q
 }

pkg/machine/qemu/stubber.go

@@ -83,6 +83,7 @@ func (q *QEMUStubber) setQEMUCommandLine(mc *vmconfigs.MachineConfig) error {
 		return err
 	}
 	q.Command.SetSerialPort(*readySocket, *mc.QEMUHypervisor.QEMUPidPath, mc.Name)
+	q.Command.SetVsocket(mc.VSocketCid)
 
 	q.Command.SetUSBHostPassthrough(mc.Resources.USBs)
 

pkg/machine/vmconfigs/config_common.go

@@ -14,6 +14,8 @@ type QEMUConfig struct {
 	QMPMonitor command.Monitor
 	// QEMUPidPath is where to write the PID for QEMU when running
 	QEMUPidPath *define.VMFile
+	// VSocketCid ID for VSocket communication
+	VSocketCid int32
 }
 
 // Stubs

pkg/machine/vmconfigs/config_windows.go

@@ -24,6 +24,8 @@ type QEMUConfig struct {
 	QMPMonitor command.Monitor
 	// QEMUPidPath is where to write the PID for QEMU when running
 	QEMUPidPath *define.VMFile
+	// VSocketCid ID for VSocket communication
+	VSocketCid int32
 }
 
 // Stubs