[dts] [DTS][PATCH V2 1/3] virt: vf to vf bridge config file

[dts] [DTS][PATCH V2 1/3] virt: vf to vf bridge config file

[Jingguo Fu]

Abstract:
    add config for vf to vf bridge test suite.

Signed-off-by: Jingguo Fu <jingguox.fu@intel.com>
---
 conf/vf_to_vf_bridge.cfg | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 conf/vf_to_vf_bridge.cfg

diff --git a/conf/vf_to_vf_bridge.cfg b/conf/vf_to_vf_bridge.cfg
new file mode 100644
index 0000000..9c31437
--- /dev/null
+++ b/conf/vf_to_vf_bridge.cfg
@@ -0,0 +1,28 @@
+# vm configuration for vhost sample case
+[vm0]
+cpu =
+    model=host,number=4,cpupin=20 21 22 23;
+mem =
+    size=6144,hugepage=yes;
+disk =
+    file=/home/img/vm0.img; 
+login =
+    user=root,password=tester;
+vnc = 
+    displayNum=4;
+daemon =
+    enable=yes;
+
+[vm1]
+cpu =
+    model=host,number=4,cpupin=30 31 32 33;
+mem =
+    size=6144,hugepage=yes;
+disk =
+    file=/home/img/vm1.img;
+login =
+    user=root,password=tester;
+vnc = 
+    displayNum=5;
+daemon =
+    enable=yes;
-- 
2.1.0

[dts] [DTS][PATCH V2 2/3] virt: vf to vf nic bridge test plan

[Jingguo Fu]

Abstract:
    add vf to vf bridge test plan, totally has three cases.

Signed-off-by: Jingguo Fu <jingguox.fu@intel.com>
---
 test_plans/vf_to_vf_nic_bridge_test_plan.rst | 181 +++++++++++++++++++++++++++
 1 file changed, 181 insertions(+)
 create mode 100644 test_plans/vf_to_vf_nic_bridge_test_plan.rst

diff --git a/test_plans/vf_to_vf_nic_bridge_test_plan.rst b/test_plans/vf_to_vf_nic_bridge_test_plan.rst
new file mode 100644
index 0000000..c7303fe
--- /dev/null
+++ b/test_plans/vf_to_vf_nic_bridge_test_plan.rst
@@ -0,0 +1,181 @@
+.. Copyright (c) <2015>, 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.
+
+VF to VF Bridge testplan
+========================
+This test suite aims to validate the bridge function on physical functional 
+for virtual functional to virtual functional communication. Cases of the 
+suite based on the vm to vm test scenario, echo vm needs on vf, and both of
+the vfs generated from the same pf port.
+
+Prerequisites: 
+==============
+
+On host:
+
+        Hugepages: at least 10 G hugepages, 6G(for vm on which run pktgen as stream source end) + 2G(for vm on which run testpmd as receive end) + 2G(for host used) 
+
+        Guset: two img with os for kvm qemu
+
+        NIC: one pf port 
+
+        pktgen-dpdk: need a pktgen-dpdk tarball under $DTS/dep/, as it's named: pktgen-dpdk.tar.gz
+
+On Guest:
+
+        Stream Source end: scapy pcpay and essential tarballs for compile pktgen-dpdk tools
+
+
+Set up basic virtual scenario:
+==============================
+
+step 1: generate two vfs on the target pf port (i.e. 0000:85:00.0):
+
+        echo 2 > /sys/bus/pci/devices/0000\:85\:00.0/sriov_numvfs
+        
+step 2: bind the two vfs to pci-stub:
+
+        echo "8086 10ed" > /sys/bus/pci/drivers/pci-stub/new_id
+        echo 0000:85:10.0 > /sys/bus/pci/devices/0000:85:10.0/driver/unbind
+        echo 0000:85:10.0 > /sys/bus/pci/drivers/pci-stub/bind
+        echo 0000:85:10.2 > /sys/bus/pci/devices/0000:85:10.2/driver/unbind
+        echo 0000:85:10.2 > /sys/bus/pci/drivers/pci-stub/bind
+
+step 3: passthrough vf 0 to vm0 and start vm0:
+
+        taskset -c 20,21,22,23 /usr/local/qemu-2.4.0/x86_64-softmmu/qemu-system-x86_64 \
+        -name vm0 -enable-kvm -chardev socket,path=/tmp/vm0_qga0.sock,server,nowait,id=vm0_qga0 \
+        -device virtio-serial -device virtserialport,chardev=vm0_qga0,name=org.qemu.guest_agent.0 \
+        -daemonize -monitor unix:/tmp/vm0_monitor.sock,server,nowait \
+        -net nic,vlan=0,macaddr=00:00:00:e2:4f:fb,addr=1f \
+        -net user,vlan=0,hostfwd=tcp:10.239.128.125:6064-:22 \
+        -device pci-assign,host=85:10.0,id=pt_0 -cpu host -smp 4 -m 6144 \
+        -object memory-backend-file,id=mem,size=6144M,mem-path=/mnt/huge,share=on \
+        -numa node,memdev=mem -mem-prealloc -drive file=/home/img/vm0.img -vnc :4
+
+step 4: passthrough vf 1 to vm1 and start vm1:
+
+        taskset -c 30,31,32,33 /usr/local/qemu-2.4.0/x86_64-softmmu/qemu-system-x86_64  \
+        -name vm1 -enable-kvm -chardev socket,path=/tmp/vm1_qga0.sock,server,nowait,id=vm1_qga0 \
+        -device virtio-serial -device virtserialport,chardev=vm1_qga0,name=org.qemu.guest_agent.0 \
+        -daemonize -monitor unix:/tmp/vm1_monitor.sock,server,nowait \
+        -net nic,vlan=0,macaddr=00:00:00:7b:d5:cb,addr=1f \
+        -net user,vlan=0,hostfwd=tcp:10.239.128.125:6126-:22 \
+        -device pci-assign,host=85:10.2,id=pt_0 -cpu host -smp 4 -m 6144 \
+        -object memory-backend-file,id=mem,size=6144M,mem-path=/mnt/huge,share=on \
+        -numa node,memdev=mem -mem-prealloc -drive file=/home/img/vm1.img -vnc :5
+
+
+Test Case1: test_2vf_d2d_pktgen_stream
+===========================================
+both vfs in the two vms using the dpdk driver, send stream from vf1 in vm1 by dpdk pktgen 
+to vf in vm0, and verify the vf on vm0 can receive stream.
+
+step 1: run testpmd on vm0:
+
+        ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x7 -n 1  -- -i  --txqflags=0
+
+step 2: set rxonly and start on vm0:
+
+        set fwd rxonly
+        start
+
+step 3: prepare pktgen-dpdk tarball and compile on vm1:
+
+        scp pktgen-dpdk.tar.gz to vm1
+        tar zxvf pktgen-dpdk.tar.gz
+        cd ./pktgen-dpdk
+        make
+step 4: generate pcap file on vm1:
+
+        Context: [Ether(dst="52:54:12:45:67:10", src="52:54:12:45:67:11")/IP()/Raw(load='X'\*46)]
+
+step 5: send stream by pkt-gen on vm1:
+
+        ./app/app/x86_64-native-linuxapp-gcc/app/pktgen -c 0xf -n 2 --proc-type auto -- -P -T -m '1.0' -s P:flow.pcap
+        
+step 6: verify vf 0 receive status on vm0: Rx-packets is 100
+
+        show port stats 0
+        ######################## NIC statistics for port 0  ########################
+        RX-packets: 100  RX-missed: 0          RX-bytes:  6000
+        RX-errors: 0
+        RX-nombuf:  0   
+        TX-packets: 0          TX-errors: 0          TX-bytes:  0
+        ############################################################################    
+
+Test Case2: test_2vf_d2k_pktgen_stream
+======================================
+step 1: bind vf to kernel driver on vm0
+
+step 2: start up vf interface and using tcpdump to capature received packets
+
+step 3: prepare pktgen-dpdk tarball and compile on vm1:
+
+        scp pktgen-dpdk.tar.gz to vm1
+        tar zxvf pktgen-dpdk.tar.gz
+        cd ./pktgen-dpdk
+        make
+step 4: generate pcap file on vm1:
+
+        Context: [Ether(dst="52:54:12:45:67:10", src="52:54:12:45:67:11")/IP()/Raw(load='X'\*46)]
+
+step 5: send stream by pkt-gen on vm1:
+
+        ./app/app/x86_64-native-linuxapp-gcc/app/pktgen -c 0xf -n 2 --proc-type auto -- -P -T -m '1.0' -s P:flow.pcap
+
+step 6: verify vf 0 receive status on vm0:
+
+Test Case3: test_2vf_k2d_scapy_stream
+======================================
+step 1: run testpmd on vm0:
+
+        ./x86_64-native-linuxapp-gcc/app/testpmd -c 0x7 -n 1  -- -i  --txqflags=0
+
+step 2: set rxonly and start on vm0:
+
+        set fwd rxonly
+        start
+
+step 3: bind vf to kernel driver on vm0
+
+step 4: using scapy to send packets
+
+step 5:verify vf 0 receive status on vm0: Rx-packets > 0
+
+        show port stats 0
+        ######################## NIC statistics for port 0  ########################
+        RX-packets: 100  RX-missed: 0          RX-bytes:  6000
+        RX-errors: 0
+        RX-nombuf:  0
+        TX-packets: 0          TX-errors: 0          TX-bytes:  0
+        ############################################################################
-- 
2.1.0

[dts] [DTS][PATCH V2 3/3] virt: vf to vf nic bridge test suite

[Jingguo Fu]

Abstract:
    This suite adds three cases totally for vf to vf bridge
test suite, the test scenario details see the test plan ,
which named "0002-virt-vf-to-vf-nic-bridge-test-plan.patch".

    Test Case1: test_2vf_d2d_pktgen_stream
        use pktgen-dpdk as packet generator in first vm, and
use pmd driver on another vm

    Test Case2: test_2vf_d2k_pktgen_stream
        use pktgen-dpdk as packet generator in first vm, and
use kernel driver on another vm

    Test Case3: test_2vf_k2d_scapy_stream
        use scapy as packet generator in first vm, and
use pmd driver on another vm

Signed-off-by: Jingguo Fu <jingguox.fu@intel.com>
---
 tests/TestSuite_vf_to_vf_nic_bridge.py | 251 +++++++++++++++++++++++++++++++++
 1 file changed, 251 insertions(+)
 create mode 100644 tests/TestSuite_vf_to_vf_nic_bridge.py

diff --git a/tests/TestSuite_vf_to_vf_nic_bridge.py b/tests/TestSuite_vf_to_vf_nic_bridge.py
new file mode 100644
index 0000000..4922f1d
--- /dev/null
+++ b/tests/TestSuite_vf_to_vf_nic_bridge.py
@@ -0,0 +1,251 @@
+# BSD LICENSE
+#
+# Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+# 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.
+"""
+DPDK Test suite
+Test vf to vf nic bridge
+"""
+
+import re
+import dts
+import time
+import pdb
+
+from test_case import TestCase
+from qemu_kvm import QEMUKvm
+from pmd_output import PmdOutput
+
+VF_NUMS_ON_ONE_PF = 2
+VF_TEMP_MAC = "52:54:12:45:67:1%d"
+SEND_PACKET = 100
+
+class TestVF2VFBridge(TestCase):
+    def set_up_all(self):
+        self.dut_ports = self.dut.get_ports(self.nic)
+        self.verify(len(self.dut_ports) >= 1, "Insufficient ports")
+        self.vm0 = None
+        self.vm1 = None
+
+    def set_up(self):
+        pass
+
+    def set_up_vf_to_vf_env(self, driver='default'):
+        self.pf_port_for_vfs = self.dut_ports[0]
+        self.dut.restore_interfaces()
+        self.dut.generate_sriov_vfs_by_port(self.pf_port_for_vfs, VF_NUMS_ON_ONE_PF, driver=driver)
+        self.sriov_vfs_ports = self.dut.ports_info[self.pf_port_for_vfs]['vfs_port']
+        self.host_port_intf = self.dut.ports_info[self.pf_port_for_vfs]['intf']
+        for i in range(VF_NUMS_ON_ONE_PF):
+            self.dut.send_expect('ip link set dev %s vf %d mac %s' % \
+                                (self.host_port_intf, i, VF_TEMP_MAC % i), '#', 10)
+        try:
+            for port in self.sriov_vfs_ports:
+                port.bind_driver('pci-stub')
+            time.sleep(1)
+        except Exception as e:
+            raise Exception(e)
+        
+        vf0_prop = {'opt_host' : self.sriov_vfs_ports[0].pci}
+        vf1_prop = {'opt_host' : self.sriov_vfs_ports[1].pci}
+        time.sleep(1)
+        self.vm0 = QEMUKvm(self.dut, 'vm0', 'vf_to_vf_bridge')
+        self.vm0.set_vm_device(driver='pci-assign', **vf0_prop)
+        try:
+            self.vm0_dut = self.vm0.start()
+            if self.vm0_dut is None:
+                raise Exception('Set up VM0 failed')
+        except Exception as e:
+            print dts.RED(str(e))
+        
+        self.vm1 = QEMUKvm(self.dut, 'vm1', 'vf_to_vf_bridge')
+        self.vm1.set_vm_device(driver='pci-assign', **vf1_prop)
+        try:
+            self.vm1_dut = self.vm1.start()
+            if self.vm1_dut is None:
+                raise Exception('Set up VM1 failed')
+        except Exception as e:
+            print dts.RED(str(e))
+    
+    def clear_vf_to_vf_env(self):
+        if self.vm0 is not None:
+            self.vm0.stop()
+            self.vm0 = None
+        if self.vm1 is not None:
+            self.vm1.stop()
+            self.vm1 = None
+        if self.pf_port_for_vfs is not None:
+            self.dut.destroy_sriov_vfs_by_port(self.pf_port_for_vfs)
+            port = self.dut.ports_info[self.pf_port_for_vfs]['port']
+            port.bind_driver()
+            self.pf_port_for_vfs = 0
+    
+    def generate_pcap_pkt(self, dst, src, load, pktname='flow.pcap'):
+        """
+        dst:
+            server: dst server object
+             ether: dst mac
+                ip: dst ip
+               udp: dst udp protocol
+               tcp: dst tcp protocal
+        src:
+            server: src server object
+             ether: src mac
+                ip: src ip
+               udp: src udp protocol
+               tcp: src tcp protocal
+        load:
+           content: pay load
+            length: content length
+        """
+        context = '[Ether(dst="%s", src="%s")/IP()/Raw(load=%s)]' % \
+                   (str(dst['ether']), str(src['ether']),load['content'])
+        src['server'].send_expect('scapy', '>>> ', 10)
+        src['server'].send_expect('wrpcap("%s", %s)'% (pktname, context), '>>> ', 10)
+        src['server'].send_expect('quit()', '#', 10)
+    
+    def install_pktgen(self, vm):
+        vm.send_expect("rm -rf pktgen-dpdk.tar.gz", "#", 10)
+        vm.send_expect("rm -rf pktgen-dpdk", "#", 10)
+        vm.session.copy_file_to('./dep/pktgen-dpdk.tar.gz')
+        vm.send_expect("cd /root", "#", 10)
+        vm.send_expect("tar zxvf pktgen-dpdk.tar.gz", '#', 20)
+        vm.send_expect("cd ./pktgen-dpdk", "#", 10)
+        vm.send_expect("make", "#", 120)
+        
+    def send_stream_pktgen(self, vm, pktname='flow.pcap'):
+        vm.send_expect("echo 2048 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages", "#", 10)
+        vm.send_expect(" mount -t hugetlbfs nodedev /mnt/huge/", "#", 10)
+        vm.send_expect("./app/app/x86_64-native-linuxapp-gcc/app/pktgen -c 0xf -n 2 --proc-type auto -- -P -T -m '1.0' -s 0:%s" % pktname, "", 100)
+        time.sleep(60)
+        vm.send_expect("set 0 rate 50", "", 20)
+        time.sleep(5)
+        vm.send_expect("set 0 count %d" % SEND_PACKET, "", 20)
+        time.sleep(5)
+        vm.send_expect("start all", "", 20)
+        time.sleep(20)
+
+    def stop_stream_pktgen(self, vm):
+        vm.send_expect("stop all", "", 20)
+        time.sleep(5)
+        vm.send_expect("quit", "#", 20)
+    
+    def test_2vf_d2d_pktgen_stream(self):
+        self.set_up_vf_to_vf_env()
+        self.vm0_ports = self.vm0_dut.get_ports('any')
+        self.vm0_pmd = PmdOutput(self.vm0_dut)
+        self.vm0_pmd.start_testpmd('all')
+        self.vm0_pmd.execute_cmd('set fwd rxonly')
+        self.vm0_pmd.execute_cmd('start')
+
+        self.vm1_ports = self.vm1_dut.get_ports('any')
+        self.install_pktgen(self.vm1_dut)
+
+        dst = {}
+        dst['server'] = self.vm0_dut
+        dst['ether'] = self.vm0_dut.ports_info[self.vm0_ports[0]]['mac']
+        src = {}
+        src['server'] = self.vm1_dut
+        src['ether'] = self.vm1_dut.ports_info[self.vm1_ports[0]]['mac']
+        load = {}
+        load['content'] = "'X'*46"
+        self.generate_pcap_pkt(dst, src, load)
+        self.send_stream_pktgen(self.vm1_dut)
+        recv_num = self.vm0_pmd.get_pmd_stats(0)['RX-packets']
+        time.sleep(1)
+        self.stop_stream_pktgen(self.vm1_dut)
+        self.vm0_pmd.execute_cmd('stop')
+        self.vm0_pmd.execute_cmd('quit', '# ')
+        
+        self.verify(recv_num is SEND_PACKET,'Rx port recv error: %d' % recv_num)
+    
+    def test_2vf_d2k_pktgen_stream(self):
+        self.set_up_vf_to_vf_env()
+        self.vm0_dut.restore_interfaces()
+        self.vm0_ports = self.vm0_dut.get_ports('any')
+        vf0_intf = self.vm0_dut.ports_info[self.vm0_ports[0]]['intf']
+        self.vm0_dut.send_expect('tcpdump -i %s -s 1000 > /dev/null &' % vf0_intf, '#', 30)
+
+        self.vm1_ports = self.vm1_dut.get_ports('any')
+        self.install_pktgen(self.vm1_dut)
+
+        dst = {}
+        dst['server'] = self.vm0_dut
+        dst['ether'] = self.vm0_dut.ports_info[self.vm0_ports[0]]['mac']
+        src = {}
+        src['server'] = self.vm1_dut
+        src['ether'] = self.vm1_dut.ports_info[self.vm1_ports[0]]['mac']
+        load = {}
+        load['content'] = "'X'*46"
+        self.generate_pcap_pkt(dst, src, load)
+        self.send_stream_pktgen(self.vm1_dut)
+        self.stop_stream_pktgen(self.vm1_dut)
+
+        recv_tcpdump = self.vm0_dut.send_expect('killall tcpdump', '#', 30)
+        time.sleep(5)
+        recv_pattern = re.compile("(\d+) packets captured")
+        recv_info = recv_pattern.search(recv_tcpdump)
+        recv_str = recv_info.group(0).split(' ')[0]
+        recv_number = int(recv_str, 10)
+        self.vm0_dut.bind_interfaces_linux(dts.drivername)
+        
+        self.verify(recv_number is SEND_PACKET, 'Rx port recv error: %d' % recv_number)
+    
+    def test_2vf_k2d_scapy_stream(self):
+        self.set_up_vf_to_vf_env()
+        self.vm0_ports = self.vm0_dut.get_ports('any')
+        self.vm0_pmd = PmdOutput(self.vm0_dut)
+        self.vm0_pmd.start_testpmd('all')
+        self.vm0_pmd.execute_cmd('set fwd rxonly')
+        self.vm0_pmd.execute_cmd('start')
+        self.vm0_pmd.execute_cmd('clear port stats all')
+
+        self.vm1_ports = self.vm1_dut.get_ports('any')
+        self.vm1_dut.restore_interfaces()
+        vf1_intf = self.vm1_dut.ports_info[self.vm1_ports[0]]['intf']
+
+        dst_mac = self.vm0_dut.ports_info[self.vm0_ports[0]]['mac']
+        src_mac = self.vm1_dut.ports_info[self.vm1_ports[0]]['mac']
+        pkt_content = 'Ether(dst="%s", src="%s")/IP()/Raw(load="X"*46)' % \
+                      (dst_mac, src_mac)
+        self.vm1_dut.send_expect('scapy', '>>> ', 10)
+        self.vm1_dut.send_expect('sendp([%s], iface="%s", count=%d)' % (pkt_content, vf1_intf, SEND_PACKET), '>>> ', 30)
+        self.vm1_dut.send_expect('quit()', '# ', 10)
+        self.vm1_dut.bind_interfaces_linux(dts.drivername)
+        recv_num = self.vm0_pmd.get_pmd_stats(0)['RX-packets']
+        self.vm0_pmd.execute_cmd('stop')
+        self.vm0_pmd.execute_cmd('quit', '# ')
+
+        self.verify(recv_num is SEND_PACKET, 'Rx port recv error: %d' % recv_num)
+    
+    def tear_down(self):
+        self.clear_vf_to_vf_env()
+    
+    def tear_down_all(self):
+        pass
-- 
2.1.0