How to use enable_uio_hv_generic_for_nic method in lisa

Best Python code snippet using lisa_python

dpdksuite.py

Source:dpdksuite.py

...557        modprobe = node.tools[Modprobe]558        nic = node.nics.get_nic_by_index()559        node.nics.get_nic_driver(nic.upper)560        if nic.bound_driver == "hv_netvsc":561            enable_uio_hv_generic_for_nic(node, nic)562        original_driver = nic.driver_sysfs_path563        node.nics.unbind(nic)564        node.nics.bind(nic, UIO_HV_GENERIC_SYSFS_PATH)565        node.execute(566            "test -e /dev/uio0",567            shell=True,568            expected_exit_code=0,569            expected_exit_code_failure_message=(570                "/dev/uio0 did not exist after driver bind"571            ),572        )573        assert_that(lsmod.module_exists("uio_hv_generic", force_run=True)).described_as(574            "uio_hv_generic was not found after bind"575        ).is_true()...

dpdkutil.py

Source:dpdkutil.py

...173    }174    return kit_cmd_pairs175UIO_HV_GENERIC_SYSFS_PATH = "/sys/bus/vmbus/drivers/uio_hv_generic"176HV_NETVSC_SYSFS_PATH = "/sys/bus/vmbus/drivers/hv_netvsc"177def enable_uio_hv_generic_for_nic(node: Node, nic: NicInfo) -> None:178    # hv_uio_generic driver uuid, a constant value used by vmbus.179    # https://doc.dpdk.org/guides/nics/netvsc.html#installation180    hv_uio_generic_uuid = "f8615163-df3e-46c5-913f-f2d2f965ed0e"181    # using netvsc pmd directly for dpdk on hv counterintuitively requires182    # you to enable to uio_hv_generic driver, steps are found:183    # https://doc.dpdk.org/guides/nics/netvsc.html#installation184    echo = node.tools[Echo]185    lsmod = node.tools[Lsmod]186    modprobe = node.tools[Modprobe]187    # enable if it is not already enabled188    if not lsmod.module_exists("uio_hv_generic", force_run=True):189        modprobe.load("uio_hv_generic")190        # vmbus magic to enable uio_hv_generic191        echo.write_to_file(192            hv_uio_generic_uuid,193            node.get_pure_path("/sys/bus/vmbus/drivers/uio_hv_generic/new_id"),194            sudo=True,195        )196def initialize_node_resources(197    node: Node,198    log: Logger,199    variables: Dict[str, Any],200    pmd: str,201    sample_apps: Union[List[str], None] = None,202) -> DpdkTestResources:203    _set_forced_source_by_distro(node, variables)204    dpdk_source = variables.get("dpdk_source", PACKAGE_MANAGER_SOURCE)205    dpdk_branch = variables.get("dpdk_branch", "")206    log.info(207        "Dpdk initialize_node_resources running"208        f"found dpdk_source '{dpdk_source}' and dpdk_branch '{dpdk_branch}'"209    )210    network_interface_feature = node.features[NetworkInterface]211    sriov_is_enabled = network_interface_feature.is_enabled_sriov()212    log.info(f"Node[{node.name}] Verify SRIOV is enabled: {sriov_is_enabled}")213    assert_that(sriov_is_enabled).described_as(214        f"SRIOV was not enabled for this test node ({node.name})"215    ).is_true()216    # dump some info about the pci devices before we start217    lspci = node.tools[Lspci]218    log.info(f"Node[{node.name}] LSPCI Info:\n{lspci.run().stdout}\n")219    # check compatibility first.220    try:221        check_dpdk_support(node)222    except UnsupportedDistroException as err:223        # forward message from distro exception224        raise SkippedException(err)225    # verify SRIOV is setup as-expected on the node after compat check226    node.nics.wait_for_sriov_enabled()227    # create tool, initialize testpmd tool (installs dpdk)228    testpmd: DpdkTestpmd = node.tools.get(229        DpdkTestpmd,230        dpdk_source=dpdk_source,231        dpdk_branch=dpdk_branch,232        sample_apps=sample_apps,233    )234    # init and enable hugepages (required by dpdk)235    init_hugepages(node)236    assert_that(len(node.nics)).described_as(237        "Test needs at least 1 NIC on the test node."238    ).is_greater_than_or_equal_to(1)239    test_nic = node.nics.get_nic_by_index()240    # check an assumption that our nics are bound to hv_netvsc241    # at test start.242    assert_that(test_nic.bound_driver).described_as(243        f"Error: Expected test nic {test_nic.upper} to be "244        f"bound to hv_netvsc. Found {test_nic.bound_driver}."245    ).is_equal_to("hv_netvsc")246    # netvsc pmd requires uio_hv_generic to be loaded before use247    if pmd == "netvsc":248        # this code makes changes to interfaces that will cause later tests to fail.249        # Therefore we mark the node dirty to prevent future testing on this environment250        node.mark_dirty()251        enable_uio_hv_generic_for_nic(node, test_nic)252        # if this device is paired, set the upper device 'down'253        if test_nic.lower:254            node.nics.unbind(test_nic)255            node.nics.bind(test_nic, UIO_HV_GENERIC_SYSFS_PATH)256    return DpdkTestResources(node, testpmd)257def check_send_receive_compatibility(test_kits: List[DpdkTestResources]) -> None:258    for kit in test_kits:259        if not kit.testpmd.has_tx_ip_flag():260            raise UnsupportedPackageVersionException(261                kit.node.os,262                "dpdk",263                kit.testpmd.get_dpdk_version(),264                "-tx-ip flag for ip forwarding",265            )...

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