Re: [dts] [PATCH V2 3/3][migration] tests/vhost_user_live_migration: update code

["Wang, Yinan" <yinan.wang@intel.com>]

Acked-by: Wang, Yinan <yinan.wang@intel.com>

> -----Original Message-----
> From: Ma, LihongX
> Sent: 2019年10月15日 3:37
> To: dts@dpdk.org
> Cc: Wang, Yinan <yinan.wang@intel.com>; Ma, LihongX <lihongx.ma@intel.com>
> Subject: [dts][PATCH V2 3/3][migration] tests/vhost_user_live_migration: update
> code
> 
> Signed-off-by: lihong <lihongx.ma@intel.com>
> ---
>  tests/TestSuite_vhost_user_live_migration.py | 538
> +++++++++++++++++----------
>  1 file changed, 338 insertions(+), 200 deletions(-)
> 
> diff --git a/tests/TestSuite_vhost_user_live_migration.py
> b/tests/TestSuite_vhost_user_live_migration.py
> index 9bd3237..0b1abcc 100644
> --- a/tests/TestSuite_vhost_user_live_migration.py
> +++ b/tests/TestSuite_vhost_user_live_migration.py
> @@ -1,10 +1,40 @@
> -# <COPYRIGHT_TAG>
> +# BSD LICENSE
> +#
> +# Copyright(c) <2019> Intel Corporation.
> +# All rights reserved.
> +#
> +# Redistribution and use in source and binary forms, with or without #
> +modification, are permitted provided that the following conditions #
> +are met:
> +#
> +#   * Redistributions of source code must retain the above copyright
> +#     notice, this list of conditions and the following disclaimer.
> +#   * Redistributions in binary form must reproduce the above copyright
> +#     notice, this list of conditions and the following disclaimer in
> +#     the documentation and/or other materials provided with the
> +#     distribution.
> +#   * Neither the name of Intel Corporation nor the names of its
> +#     contributors may be used to endorse or promote products derived
> +#     from this software without specific prior written permission.
> +#
> +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS #
> +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT #
> +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> #
> +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> #
> +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> #
> +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT #
> +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> #
> +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
> ANY #
> +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT #
> +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
> USE #
> +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> 
>  import re
>  import time
> -
> -from qemu_kvm import QEMUKvm
> +import utils
> +from virt_common import VM
>  from test_case import TestCase
> +from config import UserConf
>  from exception import VirtDutInitException
> 
> 
> @@ -13,109 +43,179 @@ class TestVhostUserLiveMigration(TestCase):
>      def set_up_all(self):
>          # verify at least two duts
>          self.verify(len(self.duts) >= 2, "Insufficient duts for live migration!!!")
> +        self.host_dut = self.duts[0]
> +        self.backup_dut = self.duts[1]
> 
>          # each dut required one ports
> -        self.dut_ports = self.dut.get_ports()
> -        # Verify that enough ports are available
> -        self.verify(len(self.dut_ports) >= 1, "Insufficient ports for testing")
> -        self.dut_port = self.dut_ports[0]
> -        dut_ip = self.dut.crb['My IP']
> -        self.host_tport = self.tester.get_local_port_bydut(self.dut_port,
> dut_ip)
> -        self.host_tintf = self.tester.get_interface(self.host_tport)
> -
> -        self.backup_ports = self.duts[1].get_ports()
> -        # Verify that enough ports are available
> -        self.verify(len(self.backup_ports) >= 1, "Insufficient ports for testing")
> -        self.backup_port = self.backup_ports[0]
> -        # backup host ip will be used in migrate command
> -        self.backup_dutip = self.duts[1].crb['My IP']
> -        self.backup_tport = self.tester.get_local_port_bydut(self.backup_port,
> self.backup_dutip)
> -        self.backup_tintf = self.tester.get_interface(self.backup_tport)
> -
> -        # Use testpmd as vhost-user application on host/backup server
> -        self.vhost = "./%s/app/testpmd" % self.target
> -        self.vm_testpmd = "./%s/app/testpmd -c 0x3 -n 4 -- -i" % self.target
> -        self.virio_mac = "52:54:00:00:00:01"
> +        host_dut_ports = self.host_dut.get_ports()
> +        backup_dut_ports = self.backup_dut.get_ports()
> +        self.verify(len(host_dut_ports) >= 1 and len(backup_dut_ports) >= 1,
> +                        "Insufficient ports for testing")
> +
> +        # get mount info from cfg file
> +        conf_info = UserConf('conf/%s.cfg' % self.suite_name)
> +        conf_session = conf_info.conf._sections['mount_info']
> +        self.mount_path = conf_session['backup_mount_path']
> +        self.share_path = conf_session['host_share_dir']
> +        # config the mount server and client
> +        self.config_mount_server()
> +        self.config_mount_client()
> +
> +        host_dut_port = host_dut_ports[0]
> +        host_dut_ip = self.host_dut.crb['My IP']
> +        backup_dut_port = backup_dut_ports[0]
> +        self.backup_dut_ip = self.backup_dut.crb['My IP']
> +
> +        host_tport = self.tester.get_local_port_bydut(host_dut_port,
> host_dut_ip)
> +        backup_tport = self.tester.get_local_port_bydut(backup_dut_port,
> self.backup_dut_ip)
> +        self.host_tintf = self.tester.get_interface(host_tport)
> +        self.backup_tintf = self.tester.get_interface(backup_tport)
> +
> +        self.host_mem_channels = self.host_dut.get_memory_channels()
> +        self.backup_mem_channels =
> self.backup_dut.get_memory_channels()
> +        self.host_pci_info = self.host_dut.ports_info[0]['pci']
> +        self.backup_pci_info = self.backup_dut.ports_info[0]['pci']
> 
> -        # flag for environment
> -        self.env_done = False
> +        self.virio_mac = "52:54:00:00:00:01"
> +        self.queue_number = 1
> +        self.vm_dut_host = None
> +        self.backup_vm = None
> +        self.screen_name = 'migration'
> +        self.base_dir = self.dut.base_dir.replace('~', '/root')
> +        host_socket_num = len(set([int(core['socket']) for core in
> self.host_dut.cores]))
> +        backup_socket_num = len(set([int(core['socket']) for core in
> self.backup_dut.cores]))
> +        self.host_socket_mem = ','.join(['1024']*host_socket_num)
> +        self.backup_socket_mem = ','.join(['1024']*backup_socket_num)
> +        self.backup_speed = self.dut.skip_setup
> +        self.flag_compiled = False
> 
>      def set_up(self):
> -        self.setup_vm_env()
> -        pass
> -
> -    def bind_nic_driver(self, crb,  ports, driver=""):
> -        # modprobe vfio driver
> -        if driver == "vfio-pci":
> -            for port in ports:
> -                netdev = crb.ports_info[port]['port']
> -                driver = netdev.get_nic_driver()
> -                if driver != 'vfio-pci':
> -                    netdev.bind_driver(driver='vfio-pci')
> -
> -        elif driver == "igb_uio":
> -            # igb_uio should insmod as default, no need to check
> -            for port in ports:
> -                netdev = crb.ports_info[port]['port']
> -                driver = netdev.get_nic_driver()
> -                if driver != 'igb_uio':
> -                    netdev.bind_driver(driver='igb_uio')
> -        else:
> -            for port in ports:
> -                netdev = crb.ports_info[port]['port']
> -                driver_now = netdev.get_nic_driver()
> -                if driver == "":
> -                    driver = netdev.default_driver
> -                if driver != driver_now:
> -                    netdev.bind_driver(driver=driver)
> -
> -    def setup_vm_env(self, driver='default'):
> +        self.host_dut.send_expect('rm ./vhost-net*', '# ', 30)
> +        self.backup_dut.send_expect('rm ./vhost-net*', '# ', 30)
> +        self.migration_done = False
> +
> +    def config_mount_server(self):
> +        '''
> +        get the mount server config from file /etc/exports
> +        if not config the mount info of host_dut and backup_dut, config it
> +        '''
> +        config = '%s %s(rw,sync,no_root_squash)' % (
> +                    self.share_path, self.backup_dut.crb['IP'])
> +        try:
> +            fd = open('/etc/exports', 'r+')
> +        except Exception as e:
> +            self.logger.error('read file /etc/exports failed as %s' % str(e))
> +            raise e
> +        line = fd.readline()
> +        while(line):
> +            # already config in etc file
> +            if not line.startswith('#') and config in line:
> +                break
> +            line = fd.readline()
> +        # not config in etc file, wirte the config to it
> +        if not line:
> +            fd.write(config)
> +        fd.close()
> +
> +    def config_mount_client(self):
> +        '''
> +        config the mount client to access the mount server
> +        '''
> +        out = self.backup_dut.send_expect('ls -d %s' % self.mount_path, '# ')
> +        if 'No such file or directory' in out:
> +            self.backup_dut.send_expect('mkdir -p %s' % self.mount_path, '#
> ')
> +        config = 'mount -t nfs -o nolock,vers=4  %s:%s %s' % (
> +                    self.host_dut.crb['IP'], self.share_path,
> self.mount_path)
> +        self.host_dut.send_expect('service nfs-server restart', '# ')
> +        self.backup_dut.send_expect('service nfs-server restart', '# ')
> +        self.backup_dut.send_expect('umount %s' % self.mount_path, '# ')
> +        self.backup_dut.send_expect(config, '# ')
> +        time.sleep(2)
> +        # verify the mount result
> +        out_host = self.host_dut.send_expect('ls %s' % self.share_path, '#')
> +        out_backup = self.backup_dut.send_expect('ls %s' % self.mount_path,
> '#')
> +        self.verify(out_host == out_backup, 'the mount action failed,
> + please confrim it')
> +
> +    def get_core_list(self):
> +        core_number = self.queue_number + 1
> +        core_config = '1S/%dC/1T' % core_number
> +        core_list0 = self.duts[0].get_core_list(core_config)
> +        core_list1 = self.duts[1].get_core_list(core_config)
> +        self.verify(len(core_list0) >= core_number and len(core_list1) >=
> core_number,
> +                    'There have not enough cores to start testpmd on duts')
> +        self.host_core_mask_user = utils.create_mask(core_list0)
> +        self.backup_core_mask_user = utils.create_mask(core_list1)
> +
> +    def launch_testpmd_as_vhost_on_both_dut(self, zero_copy=False):
> +        """
> +        start testpmd as vhost user on host_dut and backup_dut
> +        """
> +        self.get_core_list()
> +        zero_copy_str = ''
> +        if zero_copy is True:
> +            zero_copy_str = ',dequeue-zero-copy=1'
> +        vdev_info = 'eth_vhost0,iface=%s/vhost-net,queues=%d%s' % (
> +                self.base_dir, self.queue_number, zero_copy_str)
> +
> +        params_info = '--nb-cores=%d --rxq=%d --txq=%d' % (
> +                self.queue_number, self.queue_number,
> + self.queue_number)
> +
> +        cmd_line = self.dut.target + '/app/testpmd -c %s -n %d -w %s ' + \
> +                "--socket-mem %s --legacy-mem --file-prefix=vhost --vdev
> '%s' " + \
> +                "-- -i %s"
> +        host_cmd_line = cmd_line % (self.host_core_mask_user,
> self.host_mem_channels,
> +                    self.host_pci_info, self.host_socket_mem,
> +                    vdev_info, params_info)
> +        backup_cmd_line = cmd_line % (self.backup_core_mask_user,
> self.backup_mem_channels,
> +                    self.backup_pci_info, self.backup_socket_mem,
> +                    vdev_info, params_info)
> +
> +        self.host_dut.send_expect(host_cmd_line, 'testpmd> ', 30)
> +        self.backup_dut.send_expect(backup_cmd_line, 'testpmd> ', 30)
> +
> +    def start_testpmd_with_fwd_mode_on_both_dut(self, fwd_mode='io'):
> +        self.host_dut.send_expect('set fwd %s' % fwd_mode, 'testpmd> ', 30)
> +        self.host_dut.send_expect('start', 'testpmd> ', 30)
> +        self.backup_dut.send_expect('set fwd %s' % fwd_mode, 'testpmd> ',
> 30)
> +        self.backup_dut.send_expect('start', 'testpmd> ', 30)
> +
> +    def setup_vm_env_on_both_dut(self, driver='default'):
>          """
>          Create testing environment on Host and Backup
>          """
> -        if self.env_done:
> -            return
> -
> -        # start vhost application on host and backup machines
> -        self.logger.info("Start vhost on host and backup host")
> -        for crb in self.duts[:2]:
> -            self.bind_nic_driver(crb, [crb.get_ports()[0]], driver="igb_uio")
> -            # start vhost app: testpmd, predict hugepage on both sockets
> -            base_dir = crb.base_dir.replace('~', '/root')
> -            crb.send_expect("rm -f %s/vhost-net" % base_dir, "# ")
> -            crb.send_expect("%s -c f -n 4 --socket-mem 512,512 --vdev
> 'eth_vhost0,iface=./vhost-net,queues=1' -- -i" % self.vhost, "testpmd> ",60)
> -            crb.send_expect("start", "testpmd> ")
> -
> +        if self.flag_compiled:
> +            self.dut.skip_setup = True
>          try:
>              # set up host virtual machine
> -            self.host_vm = QEMUKvm(self.duts[0], 'host',
> 'vhost_user_live_migration')
> +            self.host_vm = VM(self.duts[0], 'host', '%s' %
> + self.suite_name)
>              vhost_params = {}
>              vhost_params['driver'] = 'vhost-user'
> -            # qemu command can't use ~
> -            base_dir = self.dut.base_dir.replace('~', '/root')
> -            vhost_params['opt_path'] = base_dir + '/vhost-net'
> +            vhost_params['opt_path'] = self.base_dir + '/vhost-net'
>              vhost_params['opt_mac'] = self.virio_mac
> +            opt_params = 'mrg_rxbuf=on'
> +            if self.queue_number > 1:
> +                vhost_params['opt_queue'] = self.queue_number
> +                opt_params = 'mrg_rxbuf=on,mq=on,vectors=%d' %
> (2*self.queue_number + 2)
> +            vhost_params['opt_settings'] = opt_params
>              self.host_vm.set_vm_device(**vhost_params)
> 
>              self.logger.info("Start virtual machine on host")
> -            self.vm_host = self.host_vm.start()
> +            self.vm_dut_host = self.host_vm.start()
> 
> -            if self.vm_host is None:
> +            if self.vm_dut_host is None:
>                  raise Exception("Set up host VM ENV failed!")
> -
> -            self.host_serial =
> self.host_vm.connect_serial_port(name='vhost_user_live_migration')
> -            if self.host_serial is None:
> -                raise Exception("Connect host serial port failed!")
> +            self.flag_compiled = True
> 
>              self.logger.info("Start virtual machine on backup host")
>              # set up backup virtual machine
> -            self.backup_vm = QEMUKvm(self.duts[1], 'backup',
> 'vhost_user_live_migration')
> +            self.backup_vm = VM(self.duts[1], 'backup',
> + 'vhost_user_live_migration')
>              vhost_params = {}
>              vhost_params['driver'] = 'vhost-user'
> -            # qemu command can't use ~
> -            base_dir = self.dut.base_dir.replace('~', '/root')
> -            vhost_params['opt_path'] = base_dir + '/vhost-net'
> +            vhost_params['opt_path'] = self.base_dir + '/vhost-net'
>              vhost_params['opt_mac'] = self.virio_mac
> +            if self.queue_number > 1:
> +                vhost_params['opt_queue'] = self.queue_number
> +            vhost_params['opt_settings'] = opt_params
>              self.backup_vm.set_vm_device(**vhost_params)
> 
>              # start qemu command
> @@ -132,90 +232,118 @@ class TestVhostUserLiveMigration(TestCase):
>                  self.destroy_vm_env()
>                  raise Exception(ex)
> 
> -        self.env_done = True
> -
>      def destroy_vm_env(self):
> -        # if environment has been destroyed, just skip
> -        if self.env_done is False:
> -            return
> -
> -        if getattr(self, 'host_serial', None):
> -            if self.host_vm is not None:
> -                self.host_vm.close_serial_port()
> -
> -        if getattr(self, 'backup_serial', None):
> -            if self.backup_serial is not None and self.backup_vm is not None:
> -                self.backup_vm.close_serial_port()
> -
> -
> -        if getattr(self, 'vm_host', None):
> -            if self.vm_host is not None:
> +        self.logger.info("Stop virtual machine on host")
> +        try:
> +            if self.vm_dut_host is not None:
> +                if not self.migration_done:
> +                    self.vm_dut_host.send_expect('pkill screen', '# ')
>                  self.host_vm.stop()
>                  self.host_vm = None
> +        except Exception as e:
> +            self.logger.error('stop the qemu host failed as %s' %
> + str(e))
> 
>          self.logger.info("Stop virtual machine on backup host")
> -        if getattr(self, 'vm_backup', None):
> -            if self.vm_backup is not None:
> -                self.vm_backup.kill_all()
> -                # backup vm dut has been initialized, destroy backup vm
> -                self.backup_vm.stop()
> -                self.backup_vm = None
> -
> -        if getattr(self, 'backup_vm', None):
> -            # only qemu start, no session created
> +        try:
>              if self.backup_vm is not None:
> +                if self.migration_done:
> +                    self.vm_dut_backup.kill_all()
> +                    self.vm_dut_backup.send_expect('pkill screen', '#
> + ')
>                  self.backup_vm.stop()
>                  self.backup_vm = None
> +        except Exception as e:
> +            self.logger.error('stop the qemu backup failed as %s' %
> + str(e))
> 
>          # after vm stopped, stop vhost testpmd
> -        for crb in self.duts[:2]:
> +        for crb in self.duts:
> +            crb.send_expect('quit', '# ')
>              crb.kill_all()
> 
> -        for crb in self.duts[:2]:
> -            self.bind_nic_driver(crb, [crb.get_ports()[0]], driver="igb_uio")
> -
> -        self.env_done = False
> -
> -    def send_pkts(self, intf, number=0):
> +    def bind_nic_driver_of_vm(self, crb, driver=""):
> +        # modprobe vfio driver
> +        ports = crb.get_ports()
> +        if driver == "vfio-pci":
> +            crb.send_expect('modprobe vfio-pci', '# ')
> +        for port in ports:
> +            netdev = crb.ports_info[port]['port']
> +            driver_now = netdev.get_nic_driver()
> +            if driver_now != driver:
> +                netdev.bind_driver(driver)
> +
> +    def send_pkts_in_bg(self):
>          """
>          send packet from tester
>          """
> -        sendp_fmt = "sendp([Ether(dst='%(DMAC)s')/IP()/UDP()/Raw('x'*18)],
> iface='%(INTF)s', count=%(COUNT)d)"
> -        sendp_cmd = sendp_fmt % {'DMAC': self.virio_mac, 'INTF': intf,
> 'COUNT': number}
> -        self.tester.scapy_append(sendp_cmd)
> -        self.tester.scapy_execute()
> -        # sleep 10 seconds for heavy load with backup host
> -        time.sleep(10)
> -
> -    def verify_dpdk(self, tester_port, serial_session):
> -        num_pkts = 10
> +        sendp_fmt = "sendp([Ether(dst='%s')/IP(src='%s',
> dst='%s')/UDP(sport=11,dport=12)/('x'*18)], iface='%s', loop=1, inter=0.5)"
> +        sendp_cmd = sendp_fmt % (self.virio_mac, '1.1.1.1', '2.2.2.2',
> self.host_tintf)
> +        self.send_pks_session = self.tester.create_session("scapy1")
> +        self.send_pks_session.send_expect("scapy", ">>>")
> +        self.send_pks_session.send_command(sendp_cmd)
> +
> +        if self.host_tintf != self.backup_tintf:
> +            sendp_cmd = sendp_fmt % {'DMAC': self.virio_mac, 'INTF':
> self.backup_tintf}
> +            self.send_pks_session2 = self.tester.create_session("scapy2")
> +            self.send_pks_session2.send_expect("scapy", ">>>")
> +            self.send_pks_session2.send_command(sendp_cmd)
> +
> +    def stop_send_pkts_on_tester(self):
> +        self.tester.send_expect('pkill scapy', '# ')
> +        if getattr(self, "scapy1", None):
> +            self.tester.destroy_session(self.send_pks_session)
> +        if getattr(self, "scapy2", None):
> +            self.tester.destroy_session(self.send_pks_session2)
> +
> +    def start_testpmd_on_vm(self, vm_dut):
> +        vm_dut.send_expect('export TERM=screen', '# ')
> +        vm_dut.send_expect('screen -S %s' % self.screen_name, '# ',
> + 120)
> +
> +        vm_testpmd = self.target + '/app/testpmd -c 0x3 -n 4 -- -i'
> +        vm_dut.send_expect('cd %s' % self.base_dir, "# ")
> +        vm_dut.send_expect(vm_testpmd, 'testpmd> ', 120)
> +        vm_dut.send_expect('set fwd rxonly', 'testpmd> ', 30)
> +        vm_dut.send_expect('set promisc all off', 'testpmd> ', 30)
> +        vm_dut.send_expect('start', 'testpmd> ', 30)
> +        vm_dut.send_command('^a')
> +        vm_dut.send_command('^d')
> +
> +    def verify_dpdk(self, vm_dut):
> +        vm_dut.send_expect('export TERM=screen', '# ')
> +        vm_dut.send_command('screen -r %s' % self.screen_name)
> 
>          stats_pat = re.compile("RX-packets: (\d+)")
> -        intf = self.tester.get_interface(tester_port)
> -        serial_session.send_expect("stop", "testpmd> ")
> -        serial_session.send_expect("set fwd rxonly", "testpmd> ")
> -        serial_session.send_expect("clear port stats all", "testpmd> ")
> -        serial_session.send_expect("start tx_first", "testpmd> ")
> -
> -        # send packets from tester
> -        self.send_pkts(intf, number=num_pkts)
> -
> -        out = serial_session.send_expect("show port stats 0", "testpmd> ")
> +        vm_dut.send_expect("clear port stats all", "testpmd> ")
> +        time.sleep(5)
> +        out = vm_dut.send_expect("show port stats 0", "testpmd> ")
> +        print out
>          m = stats_pat.search(out)
>          if m:
>              num_received = int(m.group(1))
>          else:
>              num_received = 0
> 
> -        self.logger.info("Verified %s packets recevied" % num_received)
> -        self.verify(num_received >= num_pkts, "Not receive packets as
> expected!!!")
> +        self.verify(num_received > 0, "Not receive packets as expected!!!")
> +        vm_dut.send_command('^a')
> +        vm_dut.send_command('^d')
> 
> -    def verify_kernel(self, tester_port, vm_dut):
> +    def verify_kernel(self, vm_dut):
>          """
>          Function to verify packets received by virtIO
>          """
> -        intf = self.tester.get_interface(tester_port)
> -        num_pkts = 10
> +        vm_dut.send_expect('export TERM=screen', '# ')
> +        vm_dut.send_command('screen -r %s' % self.screen_name)
> +        # clean the output info before verify
> +        vm_dut.get_session_output(timeout=1)
> +        time.sleep(5)
> +        out = vm_dut.get_session_output(timeout=1)
> +        print out
> +        num = out.count('UDP')
> +        self.verify(num > 0, "Not receive packets as expected!!!")
> +        vm_dut.send_command('^a')
> +        vm_dut.send_command('^d')
> +
> +    def start_tcpdump_on_vm(self, vm_dut):
> +        vm_dut.send_expect('export TERM=screen', '# ')
> +        vm_dut.send_expect('screen -S %s' % self.screen_name, '# ',
> + 120)
> 
>          # get host interface
>          vm_intf = vm_dut.ports_info[0]['port'].get_interface_name()
> @@ -232,100 +360,110 @@ class TestVhostUserLiveMigration(TestCase):
>              direct_param = ""
> 
>          vm_dut.send_expect("tcpdump -i %s %s -v" % (vm_intf,
> direct_param), "listening on", 120)
> -        # wait for promisc on
> -        time.sleep(3)
> +        time.sleep(2)
> +        vm_dut.send_command('^a')
> +        vm_dut.send_command('^d')
> +
> +    def send_and_verify(self, verify_fun, multi_queue=False):
> +        '''
> +        start to send packets
> +        verify vm_host can recevied packets before migration
> +        verify vm_host can recevied packets during migration
> +        verify vm_backup can recevied packets after migration
> +        '''
>          # send packets from tester
> -        self.send_pkts(intf, number=num_pkts)
> +        self.send_pkts_in_bg()
> 
> -        # killall tcpdump and verify packet received
> -        out = vm_dut.get_session_output(timeout=1)
> -        vm_dut.send_expect("^C", "# ")
> -        num = out.count('UDP')
> -        self.logger.info("Verified %s packets recevied" % num_pkts)
> -        self.verify(num == num_pkts, "Not receive packets as expected!!!")
> -
> -    def test_migrate_with_kernel(self):
> -        """
> -        Verify migrate virtIO device from host to backup host,
> -        Verify before/in/after migration, device with kernel driver can receive
> packets
> -        """
> -        # bind virtio-net back to virtio-pci
> -        self.bind_nic_driver(self.vm_host, [self.vm_host.get_ports()[0]],
> driver="")
>          # verify host virtio-net work fine
> -        self.verify_kernel(self.host_tport, self.vm_host)
> +        verify_fun(self.vm_dut_host)
> 
>          self.logger.info("Migrate host VM to backup host")
>          # start live migration
> -        ret = self.host_vm.start_migration(self.backup_dutip,
> self.backup_vm.migrate_port)
> +        ret = self.host_vm.start_migration(self.backup_dut_ip,
> + self.backup_vm.migrate_port)
>          self.verify(ret, "Failed to migration, please check VM and qemu
> version")
> 
> -        # make sure still can receive packets in migration process
> -        self.verify_kernel(self.host_tport, self.vm_host)
> +        if multi_queue is True:
> +            vm_intf =
> self.vm_dut_host.ports_info[0]['port'].get_interface_name()
> +            out = self.vm_dut_host.send_expect('ethtool -L %s combined 4' %
> vm_intf, '# ')
> +            self.verify('Error' not in out and 'Failed' not in out,
> + 'ethtool set combined failed during migration')
> 
>          self.logger.info("Waiting migration process done")
>          # wait live migration done
>          self.host_vm.wait_migration_done()
> -
> -        # check vhost testpmd log after migration
> -        out = self.duts[0].get_session_output(timeout=1)
> -        self.verify("closed" in out, "Vhost Connection NOT closed on host")
> -        out = self.duts[1].get_session_output(timeout=1)
> -        self.verify("established" in out, "Device not ready on backup host")
> +        self.migration_done = True
> 
>          self.logger.info("Migration process done, then go to backup VM")
>          # connected backup VM
> -        self.vm_backup = self.backup_vm.migrated_start()
> +        self.vm_dut_backup =
> + self.backup_vm.migrated_start(set_target=False)
> 
>          # make sure still can receive packets
> -        self.verify_kernel(self.backup_tport, self.vm_backup)
> +        verify_fun(self.vm_dut_backup)
> 
> -    def test_migrate_with_dpdk(self):
> -        # bind virtio-net to igb_uio
> -        self.bind_nic_driver(self.vm_host, [self.vm_host.get_ports()[0]],
> driver="igb_uio")
> +    def test_migrate_with_virtio_net(self):
> +        """
> +        Verify migrate virtIO device from host to backup host,
> +        Verify before/in/after migration, device with kernel driver can receive
> packets
> +        """
> +        self.queue_number = 1
> +        self.launch_testpmd_as_vhost_on_both_dut()
> +        self.start_testpmd_with_fwd_mode_on_both_dut()
> +        self.setup_vm_env_on_both_dut()
> 
> -        # start testpmd on host vm
> -        base_dir = self.vm_host.base_dir.replace('~', '/root')
> -        self.host_serial.send_expect('cd %s' % base_dir, "# ")
> -        self.host_serial.send_expect(self.vm_testpmd, "testpmd> ", 120)
> +        # bind virtio-net back to virtio-pci
> +        self.bind_nic_driver_of_vm(self.vm_dut_host, driver="")
> +        # start screen and tcpdump on vm
> +        self.start_tcpdump_on_vm(self.vm_dut_host)
> 
> -        # verify testpmd receive packets
> -        self.verify_dpdk(self.host_tport, self.host_serial)
> +        self.send_and_verify(self.verify_kernel)
> 
> -        self.logger.info("Migrate host VM to backup host")
> -        # start live migration
> +    def test_migrete_with_vritio_net_with_multi_queue(self):
> +        self.queue_number = 4
> +        self.launch_testpmd_as_vhost_on_both_dut()
> +        self.start_testpmd_with_fwd_mode_on_both_dut()
> +        self.setup_vm_env_on_both_dut()
> 
> -        ret = self.host_vm.start_migration(self.backup_dutip,
> self.backup_vm.migrate_port)
> -        self.verify(ret, "Failed to migration, please check VM and qemu
> version")
> +        # bind virtio-net back to virtio-pci
> +        self.bind_nic_driver_of_vm(self.vm_dut_host, driver="")
> +        self.start_tcpdump_on_vm(self.vm_dut_host)
> 
> -        # make sure still can receive packets in migration process
> -        self.verify_dpdk(self.host_tport, self.host_serial)
> +        self.send_and_verify(self.verify_kernel, True)
> 
> -        self.logger.info("Waiting migration process done")
> -        # wait live migration done
> -        self.host_vm.wait_migration_done()
> +    def test_migrate_with_virtio_pmd(self):
> +        self.queue_number = 1
> +        self.launch_testpmd_as_vhost_on_both_dut()
> +        self.start_testpmd_with_fwd_mode_on_both_dut()
> +        self.setup_vm_env_on_both_dut()
> 
> -        # check vhost testpmd log after migration
> -        out = self.duts[0].get_session_output(timeout=1)
> -        self.verify("closed" in out, "Vhost Connection NOT closed on host")
> -        out = self.duts[1].get_session_output(timeout=1)
> -        self.verify("established" in out, "Device not ready on backup host")
> +        # bind virtio-net to igb_uio
> +        self.bind_nic_driver_of_vm(self.vm_dut_host, driver="igb_uio")
> +        self.start_testpmd_on_vm(self.vm_dut_host)
> 
> -        self.logger.info("Migration process done, then go to backup VM")
> -        time.sleep(5)
> +        self.send_and_verify(self.verify_dpdk)
> 
> -        # make sure still can receive packets
> -        self.backup_serial =
> self.backup_vm.connect_serial_port(name='vhost_user_live_migration',
> first=False)
> -        if self.backup_serial is None:
> -            raise Exception("Connect backup host serial port failed!")
> +    def test_migrate_with_zero_copy_virtio_pmd(self):
> +        self.queue_number = 1
> +        zero_copy = True
> +        # start testpmd and qemu on dut
> +        # after qemu start ok, then send 'start' command to testpmd
> +        # if send 'start' command before start qemu, maybe qemu will start
> failed
> +        self.launch_testpmd_as_vhost_on_both_dut(zero_copy)
> +        self.setup_vm_env_on_both_dut()
> +        self.start_testpmd_with_fwd_mode_on_both_dut()
> 
> -        self.verify_dpdk(self.backup_tport, self.backup_serial)
> +        # bind virtio-net to igb_uio
> +        self.bind_nic_driver_of_vm(self.vm_dut_host, driver="igb_uio")
> +        self.start_testpmd_on_vm(self.vm_dut_host)
> 
> -        # quit testpmd
> -        self.backup_serial.send_expect("quit", "# ")
> +        self.send_and_verify(self.verify_dpdk)
> 
>      def tear_down(self):
>          self.destroy_vm_env()
> +        # stop send packet on tester
> +        self.stop_send_pkts_on_tester()
> +        self.duts[0].send_expect('killall -s INT qemu-system-x86_64', '#')
> +        self.duts[1].send_expect('killall -s INT qemu-system-x86_64',
> + '#')
>          pass
> 
>      def tear_down_all(self):
> +        self.dut.skip_setup = self.backup_speed
>          pass
> --
> 2.7.4