[PATCH v2 09/17] KVM-test: Add a subtest of nic promisc

Amos Kong
2010-08-23T08:50:05Z

This test mainly covers TCP sent from host to guest and from guest to host
with repeatedly turn on/off NIC promiscuous mode.

Changes from v1:
- Don't abruptly fail the whole test if we get a failure for a single size

Signed-off-by: Amos Kong <akong@redhat.com>
---
0 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/client/tests/kvm/tests/nic_promisc.py b/client/tests/kvm/tests/nic_promisc.py
new file mode 100644
index 0000000..b75a1cd
--- /dev/null
+++ b/client/tests/kvm/tests/nic_promisc.py
@@ -0,0 +1,100 @@
+import logging
+from autotest_lib.client.common_lib import error
+from autotest_lib.client.bin import utils
+import kvm_utils, kvm_test_utils
+
+def run_nic_promisc(test, params, env):
+ """
+ Test nic driver in promisc mode:
+
+ 1) Boot up a guest
+ 2) Repeatedly enable/disable promiscuous mode in guest
+ 3) TCP data transmission from host to guest, and from guest to host,
+ with 1/1460/65000/100000000 bytes payloads
+ 4) Clean temporary files
+ 5) Stop enable/disable promiscuous mode change
+
+ @param test: kvm test object
+ @param params: Dictionary with the test parameters
+ @param env: Dictionary with test environment
+ """
+ timeout = int(params.get("login_timeout", 360))
+ vm = kvm_test_utils.get_living_vm(env, params.get("main_vm"))
+ session = kvm_test_utils.wait_for_login(vm, timeout=timeout)
+ logging.info("Trying to log into guest '%s' by serial", vm.name)
+ session2 = kvm_utils.wait_for(lambda: vm.serial_login(),
+ timeout, 0, step=2)
+ if not session2:
+ raise error.TestFail("Could not log into guest '%s'" % vm.name)
+
+ def compare(filename):
+ cmd = "md5sum %s" % filename
+ md5_host = utils.hash_file(filename, method="md5")
+ rc_guest, md5_guest = session.get_command_status_output(cmd)
+ if rc_guest:
+ logging.debug("Could not get MD5 hash for file %s on guest,"
+ "output: %s", filename, md5_guest)
+ return False
+ md5_guest = md5_guest.split()[0]
+ if md5_host != md5_guest:
+ logging.error("MD5 hash mismatch between file %s "
+ "present on guest and on host", filename)
+ logging.error("MD5 hash for file on guest: %s,"
+ "MD5 hash for file on host: %s", md5_host, md5_guest)
+ return False
+ return True
+
+ ethname = kvm_test_utils.get_linux_ifname(session, vm.get_macaddr(0))
+ set_promisc_cmd = ("ip link set %s promisc on; sleep 0.01;"
+ "ip link set %s promisc off; sleep 0.01"
+ % (ethname, ethname))
+ logging.info("Set promisc change repeatedly in guest")
+ session2.sendline("while true; do %s; done" % set_promisc_cmd)
+
+ dd_cmd = "dd if=/dev/urandom of=%s bs=%d count=1"
+ filename = "/tmp/nic_promisc_file"
+ file_size = params.get("file_size", "1, 1460, 65000, 100000000").split(",")
+ success_counter = 0
+ try:
+ for size in file_size:
+ logging.info("Create %s bytes file on host" % size)
+ utils.run(dd_cmd % (filename, int(size)))
+
+ logging.info("Transfer file from host to guest")
+ if not vm.copy_files_to(filename, filename):
+ logging.error("File transfer failed")
+ continue
+ if not compare(filename):
+ logging.error("Compare file failed")
+ continue
+ else:
+ success_counter += 1
+
+ logging.info("Create %s bytes file on guest" % size)
+ if session.get_command_status(dd_cmd % (filename, int(size)),
+ timeout=100) != 0:
+ logging.error("Create file on guest failed")
+ continue
+
+ logging.info("Transfer file from guest to host")
+ if not vm.copy_files_from(filename, filename):
+ logging.error("File transfer failed")
+ continue
+ if not compare(filename):
+ logging.error("Compare file failed")
+ continue
+ else:
+ success_counter += 1
+
+ logging.info("Clean temporary files")
+ cmd = "rm -f %s" % filename
+ utils.run(cmd)
+ session.get_command_status(cmd)
+ finally:
+ logging.info("Restore the %s to the nonpromisc mode" % ethname)
+ session2.close()
+ session.get_command_status("ip link set %s promisc off" % ethname)
+ session.close()
+ if success_counter != 2 * len(file_size):
+ raise error.TestFail("Some tests failed, succss_ratio : %s/%s"
+ % (success_counter, len(file_size)))
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index 7e1601c..89ec4b0 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -374,6 +374,10 @@ variants:
scp_timeout = 300
thread_num = 10

+ - nic_promisc: install setup unattended_install.cdrom
+ type = nic_promisc
+ file_size = 1, 1460, 65000, 100000000
+
- physical_resources_check: install setup unattended_install.cdrom
type = physical_resources_check
catch_uuid_cmd = dmidecode | awk -F: '/UUID/ {print $2}'
@@ -1072,7 +1076,7 @@ variants:

# Windows section
- @Windows:
- no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload
+ no autotest linux_s3 vlan_tag ioquit unattended_install.(url|nfs|remote_ks) jumbo file_transfer nicdriver_unload nic_promisc
shutdown_command = shutdown /s /f /t 0
reboot_command = shutdown /r /f /t 0
status_test_command = echo %errorlevel%