Instead of pci_epf_nv_test, you have to use pci_epf_tvnet driver in the steps mentioned in comment #8.
Following are the complete commands.
#echo 0x104c > functions/pci_epf_tvnet/func1/vendorid
#echo 0xb500 > functions/pci_epf_tvnet/func1/deviceid
echo 16 > functions/pci_epf_tvnet/func1/msi_interrupts
ln -s functions/pci_epf_tvnet/func1 controllers/141a0000.pcie_ep/
echo 1 > controllers/141a0000.pcie_ep/start
Once the host is booted, you can find eth1 interface on both side. Bring up both the interfaces and assign IP addresses in same subnet.
With the above command ,I have generated eth1 on both two Xavier.
But the speed at which they transfer files directly is only 12.5M/s.
Is there any way to improve it ?