I've added a Channel Device through virt-manager GUI. virsh dumpxml shows the device as.

<channel type='unix'>
      <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/ubuntusaucy.marx'/>
      <target type='virtio' name='marx'/>
      <alias name='channel2'/>
      <address type='virtio-serial' controller='0' bus='0' port='3'/>

I am expecting virConnectListAllNodeDevices to have the device in its output. But I don't see it there. Is it the right function to call ?

virNodeDevicePtr* devices;
int dev_count = virConnectListAllNodeDevices(conn, &devices, 0);
std::cout << "Devices: " << dev_count << std::endl;
for(virNodeDevicePtr* device = devices; device < devices+dev_count; ++device){
      std::cout << virNodeDeviceGetName(*device) << std::endl;

returns 66 devices but once I loop through devices I don't get any corresponding name for the channel device.

Tried using 

virConnectListAllNodeDevices(conn, &devices, VIR_CONNECT_LIST_NODE_DEVICES_CAP_VPORTS);

returns 0 devices.