Merge remote branch 'cros/upstream' into master

client/tests/kvm/tests/set_link.py

Index: client/tests/kvm/tests/set_link.py
diff --git a/client/tests/kvm/tests/set_link.py b/client/tests/kvm/tests/set_link.py
new file mode 100644
index 0000000000000000000000000000000000000000..d73a1b8502c2a1a12c628bb0ebf6bea52e676f98
--- /dev/null
+++ b/client/tests/kvm/tests/set_link.py
@@ -0,0 +1,60 @@
+import logging
+from autotest_lib.client.common_lib import error
+from autotest_lib.client.tests.kvm.tests import file_transfer
+import kvm_test_utils
+
+
+def run_set_link(test, params, env):
+    """
+    KVM guest link test:
+    1) Boot up guest with one nic
+    2) Ping guest from host
+    3) Disable guest link and ping guest from host
+    4) Re-enable guest link and ping guest from host
+    5) Do file transfer test
+
+    @param test: kvm test object
+    @param params: Dictionary with the test parameters
+    @param env: Dictionary with test environment.
+    """
+    vm = kvm_test_utils.get_living_vm(env, params.get("main_vm"))
+    timeout = float(params.get("login_timeout", 360))
+    session = kvm_test_utils.wait_for_login(vm, 0, timeout, 0, 2)
+
+    ip = vm.get_address(0)
+    linkname = vm.netdev_id[0]
+
+    logging.info("Pinging guest from host")
+    s, o = kvm_test_utils.ping(ip, count=10, timeout=20)
+    if s != 0:
+        raise error.TestFail("Ping failed, status: %s, output: %s" % (s, o))
+    ratio = kvm_test_utils.get_loss_ratio(o)
+    if ratio != 0:
+        raise error.TestFail("Loss ratio is %s, output: %s" % (ratio, o))
+
+    logging.info("Executing 'set link %s off'", linkname)
+    vm.monitor.cmd("set_link %s off" % linkname)
+    logging.info(vm.monitor.info("network"))
+    logging.info("Pinging guest from host")
+    s, o = kvm_test_utils.ping(ip, count=10, timeout=20)
+    if s == 0:
+        raise error.TestFail("Ping unexpectedly succeeded, status: %s,"
+                             "output: %s" % (s, o))
+    ratio = kvm_test_utils.get_loss_ratio(o)
+    if ratio != 100:
+        raise error.TestFail("Loss ratio is not 100%%,"
+                             "Loss ratio is %s" % ratio)
+
+    logging.info("Executing 'set link %s on'", linkname)
+    vm.monitor.cmd("set_link %s on" % linkname)
+    logging.info(vm.monitor.info("network"))
+    logging.info("Pinging guest from host")
+    s, o = kvm_test_utils.ping(ip, count=10, timeout=20)
+    if s != 0:
+        raise error.TestFail("Ping failed, status: %s, output: %s" % (s, o))
+    ratio = kvm_test_utils.get_loss_ratio(o)
+    if ratio != 0:
+        raise error.TestFail("Loss ratio is %s, output: %s" % (ratio, o))
+
+    file_transfer.run_file_transfer(test, params, env)
+    session.close()