| import logging, commands, re |
| from autotest_lib.client.common_lib import error |
| from autotest_lib.client.bin import utils |
| import kvm_test_utils, kvm_utils, kvm_subprocess |
| |
| def run_ethtool(test, params, env): |
| """ |
| Test offload functions of ethernet device by ethtool |
| |
| 1) Log into a guest. |
| 2) Initialize the callback of sub functions. |
| 3) Enable/disable sub function of NIC. |
| 4) Execute callback function. |
| 5) Check the return value. |
| 6) Restore original configuration. |
| |
| @param test: KVM test object. |
| @param params: Dictionary with the test parameters. |
| @param env: Dictionary with test environment. |
| |
| @todo: Not all guests have ethtool installed, so |
| find a way to get it installed using yum/apt-get/ |
| whatever |
| """ |
| def ethtool_get(type): |
| feature_pattern = { |
| 'tx': 'tx.*checksumming', |
| 'rx': 'rx.*checksumming', |
| 'sg': 'scatter.*gather', |
| 'tso': 'tcp.*segmentation.*offload', |
| 'gso': 'generic.*segmentation.*offload', |
| 'gro': 'generic.*receive.*offload', |
| 'lro': 'large.*receive.*offload', |
| } |
| o = session.cmd("ethtool -k %s" % ethname) |
| try: |
| return re.findall("%s: (.*)" % feature_pattern.get(type), o)[0] |
| except IndexError: |
| logging.debug("Could not get %s status" % type) |
| |
| |
| def ethtool_set(type, status): |
| """ |
| Set ethernet device offload status |
| |
| @param type: Offload type name |
| @param status: New status will be changed to |
| """ |
| logging.info("Try to set %s %s" % (type, status)) |
| if status not in ["off", "on"]: |
| return False |
| cmd = "ethtool -K %s %s %s" % (ethname, type, status) |
| if ethtool_get(type) != status: |
| try: |
| session.cmd(cmd) |
| return True |
| except: |
| return False |
| if ethtool_get(type) != status: |
| logging.error("Fail to set %s %s" % (type, status)) |
| return False |
| return True |
| |
| |
| def ethtool_save_params(): |
| logging.info("Save ethtool configuration") |
| for i in supported_features: |
| feature_status[i] = ethtool_get(i) |
| |
| |
| def ethtool_restore_params(): |
| logging.info("Restore ethtool configuration") |
| for i in supported_features: |
| ethtool_set(i, feature_status[i]) |
| |
| |
| def compare_md5sum(name): |
| logging.info("Compare md5sum of the files on guest and host") |
| host_result = utils.hash_file(name, method="md5") |
| try: |
| o = session.cmd_output("md5sum %s" % name) |
| guest_result = re.findall("\w+", o)[0] |
| except IndexError: |
| logging.error("Could not get file md5sum in guest") |
| return False |
| logging.debug("md5sum: guest(%s), host(%s)" % |
| (guest_result, host_result)) |
| return guest_result == host_result |
| |
| |
| def transfer_file(src="guest"): |
| """ |
| Transfer file by scp, use tcpdump to capture packets, then check the |
| return string. |
| |
| @param src: Source host of transfer file |
| @return: Tuple (status, error msg/tcpdump result) |
| """ |
| session2.cmd_output("rm -rf %s" % filename) |
| dd_cmd = ("dd if=/dev/urandom of=%s bs=1M count=%s" % |
| (filename, params.get("filesize"))) |
| logging.info("Creat file in source host, cmd: %s" % dd_cmd) |
| tcpdump_cmd = "tcpdump -lep -s 0 tcp -vv port ssh" |
| if src == "guest": |
| session.cmd_output(dd_cmd, timeout=360) |
| tcpdump_cmd += " and src %s" % guest_ip |
| copy_files_fun = vm.copy_files_from |
| else: |
| s, o = commands.getstatusoutput(dd_cmd) |
| tcpdump_cmd += " and dst %s" % guest_ip |
| copy_files_fun = vm.copy_files_to |
| if s != 0: |
| return (False, "Fail to create file by dd, cmd: %s" % dd_cmd) |
| |
| # only capture the new tcp port after offload setup |
| original_tcp_ports = re.findall("tcp.*:(\d+).*%s" % guest_ip, |
| utils.system_output("/bin/netstat -nap")) |
| for i in original_tcp_ports: |
| tcpdump_cmd += " and not port %s" % i |
| logging.debug("Listen by command: %s" % tcpdump_cmd) |
| session2.sendline(tcpdump_cmd) |
| if not kvm_utils.wait_for( |
| lambda:session.cmd_status("pgrep tcpdump") == 0, 30): |
| return (False, "Tcpdump process wasn't launched") |
| |
| logging.info("Start to transfer file") |
| if not copy_files_fun(filename, filename): |
| return (False, "Child process transfer file failed") |
| logging.info("Transfer file completed") |
| session.cmd("killall tcpdump") |
| try: |
| tcpdump_string = session2.read_up_to_prompt(timeout=60) |
| except kvm_subprocess.ExpectError: |
| return (False, "Fail to read tcpdump's output") |
| |
| if not compare_md5sum(filename): |
| return (False, "Files' md5sum mismatched") |
| return (True, tcpdump_string) |
| |
| |
| def tx_callback(status="on"): |
| s, o = transfer_file(src="guest") |
| if not s: |
| logging.error(o) |
| return False |
| return True |
| |
| |
| def rx_callback(status="on"): |
| s, o = transfer_file(src="host") |
| if not s: |
| logging.error(o) |
| return False |
| return True |
| |
| |
| def so_callback(status="on"): |
| s, o = transfer_file(src="guest") |
| if not s: |
| logging.error(o) |
| return False |
| logging.info("Check if contained large frame") |
| # MTU: default IPv4 MTU is 1500 Bytes, ethernet header is 14 Bytes |
| return (status == "on") ^ (len([i for i in re.findall( |
| "length (\d*):", o) if int(i) > mtu]) == 0) |
| |
| |
| def ro_callback(status="on"): |
| s, o = transfer_file(src="host") |
| if not s: |
| logging.error(o) |
| return False |
| return True |
| |
| |
| vm = kvm_test_utils.get_living_vm(env, params.get("main_vm")) |
| session = kvm_test_utils.wait_for_login(vm, |
| timeout=int(params.get("login_timeout", 360))) |
| # Let's just error the test if we identify that there's no ethtool installed |
| session.cmd("ethtool -h") |
| session2 = kvm_test_utils.wait_for_login(vm, |
| timeout=int(params.get("login_timeout", 360))) |
| mtu = 1514 |
| feature_status = {} |
| filename = "/tmp/ethtool.dd" |
| guest_ip = vm.get_address() |
| ethname = kvm_test_utils.get_linux_ifname(session, vm.get_mac_address(0)) |
| supported_features = params.get("supported_features").split() |
| test_matrix = { |
| # type:(callback, (dependence), (exclude) |
| "tx": (tx_callback, (), ()), |
| "rx": (rx_callback, (), ()), |
| "sg": (tx_callback, ("tx",), ()), |
| "tso": (so_callback, ("tx", "sg",), ("gso",)), |
| "gso": (so_callback, (), ("tso",)), |
| "gro": (ro_callback, ("rx",), ("lro",)), |
| "lro": (rx_callback, (), ("gro",)), |
| } |
| ethtool_save_params() |
| success = True |
| try: |
| for type in supported_features: |
| callback = test_matrix[type][0] |
| for i in test_matrix[type][2]: |
| if not ethtool_set(i, "off"): |
| logging.error("Fail to disable %s" % i) |
| success = False |
| for i in [f for f in test_matrix[type][1]] + [type]: |
| if not ethtool_set(i, "on"): |
| logging.error("Fail to enable %s" % i) |
| success = False |
| if not callback(): |
| raise error.TestFail("Test failed, %s: on" % type) |
| |
| if not ethtool_set(type, "off"): |
| logging.error("Fail to disable %s" % type) |
| success = False |
| if not callback(status="off"): |
| raise error.TestFail("Test failed, %s: off" % type) |
| if not success: |
| raise error.TestError("Enable/disable offload function fail") |
| finally: |
| ethtool_restore_params() |
| session.close() |
| session2.close() |