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]...

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