KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use _restore_lro method in lisa

Best Python code snippet using lisa_python

xdpdump.py

Source:xdpdump.py

...93                sudo=True,94                cwd=self._code_path,95            )96        except Exception as identifier:97            self._restore_lro(nic_name)98            raise identifier99        # wait to receive at least one packet or 1 second to make sure the100        # process started.101        xdpdump_process.wait_output("IP", timeout=1, error_on_missing=False)102        return xdpdump_process103    def start(self, nic_name: str = "", timeout: int = 5) -> ExecutableResult:104        process = self.start_async(nic_name=nic_name, timeout=timeout)105        return self.wait_result(nic_name=nic_name, process=process)106    def wait_result(self, nic_name: str, process: Process) -> ExecutableResult:107        try:108            result = process.wait_result()109        finally:110            self._restore_lro(nic_name)111        return result112    def test_by_ping(113        self,114        nic_name: str = "",115        timeout: int = 5,116        build_type: Optional[BuildType] = None,117        remote_address: str = "",118        expected_ping_success: bool = True,119        ping_package_size: Optional[int] = None,120        # the ping command can be triggered from different node121        ping_source_node: Optional[Node] = None,122    ) -> str:123        """124        Test with ICMP ping packets125        """126        if not nic_name:127            nic_name = self.node.nics.default_nic128        if not ping_source_node:129            ping_source_node = self.node130        self.make_by_build_type(build_type=build_type)131        # if there is an remote address defined, test it in async mode, and132        # check the ping result.133        if remote_address:134            ping = ping_source_node.tools[Ping]135        xdpdump_process = self.start_async(nic_name=nic_name, timeout=timeout)136        if remote_address:137            is_success = ping.ping(138                remote_address,139                nic_name=nic_name,140                ignore_error=True,141                package_size=ping_package_size,142            )143            assert_that(is_success).described_as(144                "ping result is not expected."145            ).is_equal_to(expected_ping_success)146        result = self.wait_result(nic_name=nic_name, process=xdpdump_process)147        return result.stdout148    def make_by_build_type(self, build_type: Optional[BuildType] = None) -> None:149        env_variables: Dict[str, str] = {}150        # if no build type specified, rebuild it with default behavior.151        if build_type:152            cflags = f"-D __{build_type.name}__ -I../libbpf/src/root/usr/include"153            # no output log to improve perf with high volume data.154            if build_type in [BuildType.PERF_DROP, BuildType.TX_FWD, BuildType.PERF]:155                cflags = f"{cflags} -D __PERF__"156            env_variables["CFLAGS"] = cflags157        make = self.node.tools[Make]158        make.make(159            arguments="",160            cwd=self._code_path,161            is_clean=True,162            update_envs=env_variables,163        )164        # discard local changes after built, it's used to cleanup changes from165        # the forwarder role.166        git = self.node.tools[Git]167        git.discard_local_changes(cwd=self._code_path)168    def make_on_forwarder_role(169        self,170        forwarder_nic: NicInfo,171        receiver_nic: NicInfo,172    ) -> None:173        sed = self.node.tools[Sed]174        # replace hard code mac and ip addresses in code, the changes will be175        # reset after built.176        forwarder_mac = self._convert_mac_to_c_style(forwarder_nic.mac_addr)177        forwarder_ip = self._convert_ip_to_c_style(forwarder_nic.ip_addr)178        receiver_mac = self._convert_mac_to_c_style(receiver_nic.mac_addr)179        receiver_ip = self._convert_ip_to_c_style(receiver_nic.ip_addr)180        sed.substitute(181            regexp=r"unsigned char newethsrc \[\] = "182            "{ 0x00, 0x22, 0x48, 0x4c, 0xc4, 0x4d };",183            replacement=r"unsigned char newethsrc \[\] = {" + forwarder_mac + "};",184            file=f"{self._code_path}/xdpdump_kern.c",185        )186        sed.substitute(187            regexp=r"unsigned char newethdest \[\] = "188            "{ 0x00, 0x22, 0x48, 0x4c, 0xc0, 0xfd };",189            replacement=r"unsigned char newethdest \[\] = {" + receiver_mac + "};",190            file=f"{self._code_path}/xdpdump_kern.c",191        )192        sed.substitute(193            regexp=r"__u8 newsrc \[\] = { 10, 0, 1, 5 };",194            replacement=r"__u8 newsrc \[\] = {" + forwarder_ip + "};",195            file=f"{self._code_path}/xdpdump_kern.c",196        )197        sed.substitute(198            regexp=r"__u8 newdest \[\] = { 10, 0, 1, 4 };",199            replacement=r"__u8 newdest \[\] = {" + receiver_ip + "};",200            file=f"{self._code_path}/xdpdump_kern.c",201        )202        self.make_by_build_type(build_type=BuildType.TX_FWD)203    def _convert_mac_to_c_style(self, mac: str) -> str:204        """205        convert 00:22:48:7a:ed:28 to 0x00, 0x22, 0x48, 0x7a, 0xed, 0x28206        """207        bytes_list = [f"0x{x}" for x in mac.split(":")]208        return ", ".join(bytes_list)209    def _convert_ip_to_c_style(self, ip: str) -> str:210        """211        convert 10.0.0.1 to 10, 0, 0, 1212        """213        return ", ".join(ip.split("."))214    def _disable_lro(self, nic_name: str) -> None:215        ethtool = self.node.tools[Ethtool]216        gro_lro_settings = self._get_gro_lro_settings(nic_name)217        if gro_lro_settings.lro_setting is False:218            return219        # disable LRO (RSC), because XDP program cannot run with it. Restore220        # it after test completed.221        ethtool.change_device_gro_lro_settings(222            nic_name,223            gro_setting=gro_lro_settings.gro_setting,224            lro_setting=False,225        )226    def _restore_lro(self, nic_name: str) -> None:227        # recover settings228        ethtool = self.node.tools[Ethtool]229        current_settings = ethtool.get_device_gro_lro_settings(nic_name, force_run=True)230        original_settings = self._get_gro_lro_settings(nic_name)231        if original_settings.lro_setting == current_settings.lro_setting:232            return233        ethtool.change_device_gro_lro_settings(234            nic_name,235            gro_setting=original_settings.gro_setting,236            lro_setting=original_settings.lro_setting,237        )238    def _get_gro_lro_settings(self, nic_name: str) -> DeviceGroLroSettings:239        gro_lro_settings = self._gro_lro_settings.get(nic_name, None)240        ethtool = self.node.tools[Ethtool]...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.