[PATCH 10/18] KVM test: Add a subtest of nic promisc

[Lucas Meneghel Rodrigues <lmr@redhat.com>]

From: Amos Kong <akong@redhat.com>

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>
---
 client/tests/kvm/tests/nic_promisc.py  |  103 ++++++++++++++++++++++++++++++++
 client/tests/kvm/tests_base.cfg.sample |    6 ++-
 2 files changed, 108 insertions(+), 1 deletions(-)
 create mode 100644 client/tests/kvm/tests/nic_promisc.py

diff --git a/client/tests/kvm/tests/nic_promisc.py b/client/tests/kvm/tests/nic_promisc.py
new file mode 100644
index 0000000..e13820a
--- /dev/null
+++ b/client/tests/kvm/tests/nic_promisc.py
@@ -0,0 +1,103 @@
+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 VM.
+    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 8443fee..38e9890 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -490,6 +490,10 @@ 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}'
@@ -1207,7 +1211,7 @@ 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%
-- 
1.7.2.2