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authorFangyin Hu <fangyinx.hu@intel.com>2017-04-11 00:31:33 -0700
committerTibor Frank <tifrank@cisco.com>2017-06-09 06:59:11 +0000
commit5ce772f3b2d83c31eda5c2abdcd6cc4547ecc6c8 (patch)
tree746b1f0ad5be956e3627fd8af85a69ff31e47b34 /resources/libraries/python
parent1e59ee6e39f0604be721ac8ebdb36be14b738bd8 (diff)
Add the NSH SFC functional test cases.
1. Proxy Inbound test with 152/256/512/1024/1280/1518 Bytes VxLAN-GPE + NSH packet 2. Proxy Outbound test with 128/256/512/1024/1280/1518 Bytes VxLAN packet 3. SFC SFF test with 152/256/512/1024/1280/1518 Bytes VxLAN-GPE + NSH packet Separate the functional test bootstrap file to another code review. Change-Id: I05cf6ab1d01c1b41c1c61044d6d31fd6219b86af Signed-off-by: Fangyin Hu <fangyinx.hu@intel.com>
Diffstat (limited to 'resources/libraries/python')
-rw-r--r--resources/libraries/python/SFC/SFCConstants.py43
-rw-r--r--resources/libraries/python/SFC/SFCTest.py93
-rw-r--r--resources/libraries/python/SFC/SetupSFCTest.py226
-rw-r--r--resources/libraries/python/SFC/TunnelProtocol.py41
-rw-r--r--resources/libraries/python/SFC/VerifyPacket.py223
-rw-r--r--resources/libraries/python/SFC/__init__.py16
6 files changed, 642 insertions, 0 deletions
diff --git a/resources/libraries/python/SFC/SFCConstants.py b/resources/libraries/python/SFC/SFCConstants.py
new file mode 100644
index 0000000000..33391a1771
--- /dev/null
+++ b/resources/libraries/python/SFC/SFCConstants.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module define some constants.
+"""
+
+class SFCConstants(object):
+ """
+ Define some constants for the test filed verify.
+ """
+
+ DEF_SRC_PORT = 1234
+ DEF_DST_PORT = 5678
+ UDP_PROTOCOL = 17
+ VxLAN_UDP_PORT = 4789
+ VxLANGPE_UDP_PORT = 4790
+ VxLAN_FLAGS = 0x8
+ VxLAN_DEFAULT_VNI = 1
+ VxLANGPE_FLAGS = 0xc
+ VxLANGPE_NEXT_PROTOCOL = 0x4
+ VxLANGPE_DEFAULT_VNI = 9
+ NSH_FLAGS = 0x0
+ NSH_HEADER_LENGTH = 0x6
+ NSH_DEFAULT_MDTYPE = 0x1
+ NSH_NEXT_PROTOCOL = 0x3
+ NSH_DEFAULT_NSP = 185
+ NSH_DEFAULT_NSI = 255
+ NSH_DEFAULT_C1 = 3232248395
+ NSH_DEFAULT_C2 = 9
+ NSH_DEFAULT_C3 = 3232248392
+ NSH_DEFAULT_C4 = 50336437
diff --git a/resources/libraries/python/SFC/SFCTest.py b/resources/libraries/python/SFC/SFCTest.py
new file mode 100644
index 0000000000..456457f9f6
--- /dev/null
+++ b/resources/libraries/python/SFC/SFCTest.py
@@ -0,0 +1,93 @@
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module implements functionality which configure and start
+the NSH SFC functional test.
+"""
+
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.constants import Constants as con
+from resources.libraries.python.topology import Topology
+
+class SFCTest(object):
+ """Configure and Start the NSH SFC functional tests."""
+
+ @staticmethod
+ def config_and_start_SFC_test(dut_node, dut_port, adj_mac, testtype):
+ """
+ Start the SFC functional on the dut_node.
+
+ :param dut_node: Will execute the SFC on this node.
+ :param dut_port: The ingress interface on the DUT.
+ :param adj_mac: The adjacency interface MAC.
+ :param testtype: The SFC functional test type.
+ (Classifier, Proxy Inbound, Proxy Outbound, SFF).
+ :type dut_node: dict
+ :type dut_port: str
+ :type adj_mac: str
+ :type testtype: str
+ :returns: none
+ :raises RuntimeError: If the script execute fails.
+ """
+
+ vpp_intf_name = Topology.get_interface_name(dut_node, dut_port)
+
+ ssh = SSH()
+ ssh.connect(dut_node)
+
+ if testtype == "Classifier":
+ exec_shell = "set_sfc_classifier.sh"
+ elif testtype == "Proxy Inbound":
+ exec_shell = "set_nsh_proxy_inbound.sh"
+ elif testtype == "Proxy Outbound":
+ exec_shell = "set_nsh_proxy_outbound.sh"
+ else:
+ exec_shell = "set_sfc_sff.sh"
+
+ cmd = 'cd {0}/nsh_sfc_tests/sfc_scripts/ && sudo ./{1} {2} ' \
+ '{3} {4}'.format(con.REMOTE_FW_DIR, exec_shell, vpp_intf_name,
+ adj_mac, dut_port)
+
+ (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
+ if ret_code != 0:
+ raise RuntimeError('Failed to execute SFC setup script ' \
+ '{0} at node {1}'.format(exec_shell, dut_node['host']))
+
+ @staticmethod
+ def start_the_tcpdump_on_the_node(from_node, from_port, filter_ip):
+ """
+ Start the tcpdump on the frome_node.
+
+ :param from_node: Will execute the tcpdump on this node.
+ :param from_port: Will capture the packets on this interface.
+ :param filter_ip: filter the dest ip.
+ :type from_node: dict
+ :type from_port: str
+ :type filter_ip: str
+ :returns: none
+ :raises RuntimeError: If the script "start_tcpdump.sh" fails.
+ """
+
+ interface_name = Topology.get_interface_name(from_node, from_port)
+
+ ssh = SSH()
+ ssh.connect(from_node)
+
+ cmd = 'cd {0}/nsh_sfc_tests/sfc_scripts/ && sudo ./start_tcpdump.sh ' \
+ '{1} {2}'.format(con.REMOTE_FW_DIR, interface_name, filter_ip)
+
+ (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)
+ if ret_code != 0:
+ raise RuntimeError('Failed to exec start_tcpdump.sh at node {0}'.
+ format(from_node['host']))
diff --git a/resources/libraries/python/SFC/SetupSFCTest.py b/resources/libraries/python/SFC/SetupSFCTest.py
new file mode 100644
index 0000000000..d481202837
--- /dev/null
+++ b/resources/libraries/python/SFC/SetupSFCTest.py
@@ -0,0 +1,226 @@
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""This module exists to provide setup utilities for the framework on topology
+nodes. All tasks required to be run before the actual tests are started is
+supposed to end up here.
+"""
+
+from shlex import split
+from subprocess import Popen, PIPE, call
+from multiprocessing import Pool
+from tempfile import NamedTemporaryFile
+from os.path import basename
+
+from robot.api import logger
+from robot.libraries.BuiltIn import BuiltIn
+
+from resources.libraries.python.ssh import SSH
+from resources.libraries.python.constants import Constants as con
+from resources.libraries.python.topology import NodeType
+from resources.libraries.python.topology import Topology
+
+__all__ = ["SetupSFCTest"]
+
+
+def pack_framework_dir():
+ """Pack the testing WS into temp file, return its name.
+
+ :returns: the temporary package file name.
+ :rtype: str
+ :raises: If execute the tar command failed.
+ """
+
+ tmpfile = NamedTemporaryFile(suffix=".tgz", prefix="SFC-testing-")
+ file_name = tmpfile.name
+ tmpfile.close()
+
+ proc = Popen(
+ split("tar --exclude-vcs --exclude=./tmp -zcf {0} .".format(file_name)),
+ stdout=PIPE, stderr=PIPE)
+ (stdout, stderr) = proc.communicate()
+
+ logger.debug(stdout)
+ logger.debug(stderr)
+
+ return_code = proc.wait()
+ if return_code != 0:
+ raise RuntimeError("Could not pack testing framework.")
+
+ return file_name
+
+
+def copy_tarball_to_node(tarball, node):
+ """Copy tarball file from local host to remote node.
+
+ :param tarball: Path to tarball to upload.
+ :param node: Node in the topology where the tarball will be copied to.
+ :type tarball: str
+ :type node: dict
+ :returns: nothing
+ """
+ logger.console('Copying tarball to {0}'.format(node['host']))
+ ssh = SSH()
+ ssh.connect(node)
+
+ ssh.scp(tarball, "/tmp/")
+
+
+def extract_tarball_at_node(tarball, node):
+ """Extract tarball at given node.
+
+ Extracts tarball using tar on given node to specific CSIT loocation.
+
+ :param tarball: Path to tarball to upload.
+ :param node: Dictionary created from topology.
+ :type tarball: str
+ :type node: dict
+ :returns: nothing
+ :raises: If unpack the file failed.
+ """
+ logger.console('Extracting tarball to {0} on {1}'.format(
+ con.REMOTE_FW_DIR, node['host']))
+ ssh = SSH()
+ ssh.connect(node)
+
+ cmd = 'sudo rm -rf {1}; mkdir {1} ; tar -zxf {0} -C {1}; ' \
+ 'rm -f {0}'.format(tarball, con.REMOTE_FW_DIR)
+ (ret_code, _, stderr) = ssh.exec_command(cmd, timeout=30)
+ if ret_code != 0:
+ logger.error('Unpack error: {0}'.format(stderr))
+ raise RuntimeError('Failed to unpack {0} at node {1}'.format(
+ tarball, node['host']))
+
+
+def create_env_directory_at_node(node):
+ """Create fresh virtualenv to a directory, install pip requirements.
+
+ :param node: Dictionary created from topology, will only install in the TG
+ :type node: dict
+ :returns: nothing
+ """
+ logger.console('Extracting virtualenv, installing requirements.txt '
+ 'on {0}'.format(node['host']))
+ ssh = SSH()
+ ssh.connect(node)
+ (ret_code, stdout, stderr) = ssh.exec_command(
+ 'cd {0} && rm -rf env && '
+ 'virtualenv --system-site-packages --never-download env && '
+ '. env/bin/activate && pip install -r requirements.txt'
+ .format(con.REMOTE_FW_DIR), timeout=100)
+ if ret_code != 0:
+ logger.error('Virtualenv creation error: {0}'.format(stdout + stderr))
+ raise RuntimeError('Virtualenv setup failed')
+ else:
+ logger.console('Virtualenv created on {0}'.format(node['host']))
+
+def install_sfc_test(node):
+ """Prepare the NSH SFC test envrionment.
+
+ :param node: Dictionary created from topology
+ :type node: dict
+ :returns: nothing
+ """
+ logger.console('Install the NSH SFC on {0}'.format(node['host']))
+
+ if_name_list = Topology.get_node_interfaces(node)
+
+ ssh = SSH()
+ ssh.connect(node)
+
+ (ret_code, _, stderr) = ssh.exec_command(
+ 'cd {0}/nsh_sfc_tests/sfc_scripts/ && ./install_sfc.sh {1} {2}'
+ .format(con.REMOTE_FW_DIR, if_name_list[0], if_name_list[1]), \
+ timeout=600)
+
+ if ret_code != 0:
+ logger.error('Install the NSH SFC error: {0}'.format(stderr))
+ raise RuntimeError('Install the NSH SFC failed')
+ else:
+ logger.console('Install the NSH SFC on {0} success!'.
+ format(node['host']))
+
+def setup_node(args):
+ """Run all set-up methods for a node.
+
+ This method is used as map_async parameter. It receives tuple with all
+ parameters as passed to map_async function.
+
+ :param args: All parameters needed to setup one node.
+ :type args: tuple
+ :returns: True - success, False - error
+ :rtype: bool
+ """
+ tarball, remote_tarball, node = args
+ try:
+ copy_tarball_to_node(tarball, node)
+ extract_tarball_at_node(remote_tarball, node)
+ if node['type'] == NodeType.DUT:
+ install_sfc_test(node)
+ if node['type'] == NodeType.TG:
+ create_env_directory_at_node(node)
+ except RuntimeError as exc:
+ logger.error("Node setup failed, error:'{0}'".format(exc.message))
+ return False
+ else:
+ logger.console('Setup of node {0} done'.format(node['host']))
+ return True
+
+def delete_local_tarball(tarball):
+ """Delete local tarball to prevent disk pollution.
+
+ :param tarball: Path to tarball to upload.
+ :type tarball: str
+ :returns: nothing
+ """
+ call(split('sh -c "rm {0} > /dev/null 2>&1"'.format(tarball)))
+
+
+class SetupSFCTest(object):
+ """Setup suite run on topology nodes.
+
+ Many VAT/CLI based tests need the scripts at remote hosts before executing
+ them. This class packs the whole testing directory and copies it over
+ to all nodes in topology under /tmp/
+ """
+
+ @staticmethod
+ def setup_nsh_sfc_test(nodes):
+ """Pack the whole directory and extract in temp on each node."""
+
+ tarball = pack_framework_dir()
+ msg = 'Framework packed to {0}'.format(tarball)
+ logger.console(msg)
+ logger.trace(msg)
+ remote_tarball = "/tmp/{0}".format(basename(tarball))
+
+ # Turn off logging since we use multiprocessing
+ log_level = BuiltIn().set_log_level('NONE')
+ params = ((tarball, remote_tarball, node) for node in nodes.values())
+ pool = Pool(processes=len(nodes))
+ result = pool.map_async(setup_node, params)
+ pool.close()
+ pool.join()
+
+ # Turn on logging
+ BuiltIn().set_log_level(log_level)
+
+ logger.info(
+ 'Executed node setups in parallel, waiting for processes to end')
+ result.wait()
+
+ logger.info('Results: {0}'.format(result.get()))
+
+ logger.trace('Test framework copied to all topology nodes')
+ delete_local_tarball(tarball)
+ logger.console('All nodes are ready')
diff --git a/resources/libraries/python/SFC/TunnelProtocol.py b/resources/libraries/python/SFC/TunnelProtocol.py
new file mode 100644
index 0000000000..4b4377c895
--- /dev/null
+++ b/resources/libraries/python/SFC/TunnelProtocol.py
@@ -0,0 +1,41 @@
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module implements the VxLAN/VXLAN-GPE/NSH protocol
+for the packet analyse.
+"""
+from scapy.all import Packet
+from scapy.all import XByteField, ShortField
+from scapy.all import BitField, XBitField, IntField
+
+class VxLAN(Packet):
+ """Define the vxlan protocol for the packet analysis."""
+ name = "vxlan"
+ fields_desc = [XByteField("flags", 0x08), BitField("reserved", 0, 24),
+ BitField("vni", 0, 24), XByteField("reserved", 0x00)]
+
+class VxLANGPE(Packet):
+ """Define the vxlan-gpe protocol for the packet analysis."""
+ name = "vxlan-gpe"
+ fields_desc = [XByteField("flags", 0x0c), ShortField("reserved", 0),
+ XByteField("nextproto", 0x3), BitField("vni", 0, 24),
+ XByteField("reserved", 0x0)]
+
+class NSH(Packet):
+ """Define the NSH protocol for the packet analysis."""
+ name = "nsh"
+ fields_desc = [XBitField("flags", 0x0, 10), XBitField("length", 0x6, 6),
+ XByteField("MDtype", 0x1), XByteField("nextproto", 0x3),
+ IntField("nsp_nsi", 0), IntField("c1", 0),
+ IntField("c2", 0), IntField("c3", 0), IntField("c4", 0)]
diff --git a/resources/libraries/python/SFC/VerifyPacket.py b/resources/libraries/python/SFC/VerifyPacket.py
new file mode 100644
index 0000000000..66bd09899d
--- /dev/null
+++ b/resources/libraries/python/SFC/VerifyPacket.py
@@ -0,0 +1,223 @@
+#!/usr/bin/env python
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This module defines the common functions.
+"""
+
+import ipaddress
+
+from scapy.layers.inet import IP, UDP
+from scapy.all import Raw
+from scapy.utils import rdpcap
+from resources.libraries.python.constants import Constants as con
+from resources.libraries.python.SFC.SFCConstants import SFCConstants as sfccon
+from resources.libraries.python.SFC.TunnelProtocol import VxLAN, VxLANGPE, NSH
+
+from robot.api import logger
+
+def valid_ipv4(ipaddr):
+ """Check if IP address has the correct IPv4 address format.
+
+ :param ipaddr: IP address.
+ :type ipaddr: str
+ :returns: True in case of correct IPv4 address format,
+ otherwise return False.
+ :rtype: bool
+ """
+ try:
+ ipaddress.IPv4Address(unicode(ipaddr))
+ return True
+ except (AttributeError, ipaddress.AddressValueError):
+ return False
+
+
+def valid_ipv6(ipaddr):
+ """Check if IP address has the correct IPv6 address format.
+
+ :param ipaddr: IP address.
+ :type ipaddr: str
+ :returns: True in case of correct IPv6 address format,
+ otherwise return False.
+ :rtype: bool
+ """
+ try:
+ ipaddress.IPv6Address(unicode(ipaddr))
+ return True
+ except (AttributeError, ipaddress.AddressValueError):
+ return False
+
+
+class VerifyPacket(object):
+ """Define some functions for the test filed verify."""
+
+ @staticmethod
+ def check_vxlan_protocol(payload_data):
+ """
+ verify the vxlan protocol in the payload data.
+
+ :param payload_data: the payload data in the packet.
+ :type payload_data: str
+ :returns: none
+ :raises RuntimeError: If the vxlan protocol field verify fails.
+ """
+ # get the vxlan packet and check it
+ vxlan_pkt = VxLAN(payload_data[0:8])
+ if vxlan_pkt.flags != sfccon.VxLAN_FLAGS:
+ raise RuntimeError("Unexpected Vxlan flags: {0}".
+ format(vxlan_pkt.flags))
+
+ if vxlan_pkt.vni != sfccon.VxLAN_DEFAULT_VNI:
+ raise RuntimeError("Unexpected VNI flag: {0}".format(vxlan_pkt.vni))
+
+ @staticmethod
+ def check_vxlangpe_nsh_protocol(payload_data, test_type):
+ """
+ verify the vxlangpe and nsh protocol in the payload data.
+
+ :param payload_data: the payload data in the packet.
+ :param test_type: the functional test type.
+ :type payload_data: str
+ :type test_type: str
+ :returns: none
+ :raises RuntimeError: If the vxlangpe and nsh protocol
+ field verify fails.
+ """
+ # get the vxlan-gpe packet and check it
+ vxlangpe_pkt = VxLANGPE(payload_data[0:8])
+ if vxlangpe_pkt.flags != sfccon.VxLANGPE_FLAGS:
+ raise RuntimeError("Unexpected Vxlan-GPE flags: {0}".
+ format(vxlangpe_pkt.flags))
+
+ if vxlangpe_pkt.nextproto != sfccon.VxLANGPE_NEXT_PROTOCOL:
+ raise RuntimeError("next protocol not the NSH")
+
+ if vxlangpe_pkt.vni != sfccon.VxLANGPE_DEFAULT_VNI:
+ raise RuntimeError("Unexpected VNI flag: {0}".
+ format(vxlangpe_pkt.vni))
+
+ # get the NSH packet and check it
+ nsh_pkt = NSH(payload_data[8:32])
+ if nsh_pkt.flags != sfccon.NSH_FLAGS:
+ raise RuntimeError("Unexpected NSH flags: {0}".
+ format(nsh_pkt.flags))
+
+ if nsh_pkt.length != sfccon.NSH_HEADER_LENGTH:
+ raise RuntimeError("NSH length {0} incorrect".
+ format(nsh_pkt.length))
+
+ if nsh_pkt.MDtype != sfccon.NSH_DEFAULT_MDTYPE:
+ raise RuntimeError("NSH MD-Type {0} incorrect".
+ format(nsh_pkt.MDtype))
+
+ if nsh_pkt.nextproto != sfccon.NSH_NEXT_PROTOCOL:
+ raise RuntimeError("NSH next protocol {0} incorrect".
+ format(nsh_pkt.nextproto))
+
+ if test_type == "Proxy Outbound" or test_type == "SFF":
+ expect_nsi = sfccon.NSH_DEFAULT_NSI - 1
+ else:
+ expect_nsi = sfccon.NSH_DEFAULT_NSI
+
+ nsp_nsi = nsh_pkt.nsp_nsi
+ nsp = nsp_nsi >> 8
+ nsi = nsp_nsi & 0x000000FF
+ if nsp != sfccon.NSH_DEFAULT_NSP:
+ raise RuntimeError("NSH Service Path ID {0} incorrect".format(nsp))
+
+ if nsi != expect_nsi:
+ raise RuntimeError("NSH Service Index {0} incorrect".format(nsi))
+
+ nsh_c1 = nsh_pkt.c1
+ if nsh_c1 != sfccon.NSH_DEFAULT_C1:
+ raise RuntimeError("NSH c1 {0} incorrect".format(nsh_c1))
+
+ nsh_c2 = nsh_pkt.c2
+ if nsh_c2 != sfccon.NSH_DEFAULT_C2:
+ raise RuntimeError("NSH c2 {0} incorrect".format(nsh_c2))
+
+ nsh_c3 = nsh_pkt.c3
+ if nsh_c3 != sfccon.NSH_DEFAULT_C3:
+ raise RuntimeError("NSH c3 {0} incorrect".format(nsh_c3))
+
+ nsh_c4 = nsh_pkt.c4
+ if nsh_c4 != sfccon.NSH_DEFAULT_C4:
+ raise RuntimeError("NSH c4 {0} incorrect".format(nsh_c4))
+
+
+ @staticmethod
+ def check_the_nsh_sfc_packet(frame_size, test_type):
+ """
+ verify the NSH SFC functional test loopback packet field
+ is correct.
+
+ :param frame_size: the origin frame size.
+ :param test_type: the test type.
+ (Classifier, Proxy Inbound, Proxy Outbound, SFF).
+ :type frame_size: Integer
+ :type test_type: str
+ :returns: none
+ :raises RuntimeError: If the packet field verify fails.
+ """
+
+ rx_pcapfile = '{0}/nsh_sfc_tests/sfc_scripts/temp_packet.pcap' \
+ .format(con.REMOTE_FW_DIR)
+
+ logger.trace('read pcap file:{0}'.format(rx_pcapfile))
+
+ packets = rdpcap(rx_pcapfile)
+ if len(packets) < 1:
+ raise RuntimeError("No packet is received!")
+
+ ether = packets[0]
+
+ origin_size = int(frame_size)
+ if test_type == "Classifier":
+ expect_pkt_len = origin_size + 74 - 4
+ elif test_type == "Proxy Inbound":
+ expect_pkt_len = origin_size - 24 - 4
+ elif test_type == "Proxy Outbound":
+ expect_pkt_len = origin_size + 24 - 4
+ else:
+ expect_pkt_len = origin_size - 4
+
+ recv_pkt_len = len(ether)
+ if recv_pkt_len != expect_pkt_len:
+ raise RuntimeError("Received packet size {0} not " \
+ "the expect size {1}".format(recv_pkt_len, \
+ expect_pkt_len))
+
+ if not ether.haslayer(IP):
+ raise RuntimeError("Not a IPv4 packet")
+
+ pkt_proto = ether[IP].proto
+ if pkt_proto != sfccon.UDP_PROTOCOL:
+ raise RuntimeError("Not a UDP packet , {0}".format(pkt_proto))
+
+ if test_type == "Proxy Inbound":
+ expect_udp_port = sfccon.VxLAN_UDP_PORT
+ else:
+ expect_udp_port = sfccon.VxLANGPE_UDP_PORT
+
+ dst_port = ether[UDP].dport
+ if dst_port != expect_udp_port:
+ raise RuntimeError("UDP dest port must be {0}, {1}".
+ format(expect_udp_port, dst_port))
+
+ payload_data = ether[Raw].load
+
+ if test_type == "Proxy Inbound":
+ VerifyPacket.check_vxlan_protocol(payload_data)
+ else:
+ VerifyPacket.check_vxlangpe_nsh_protocol(payload_data, test_type)
diff --git a/resources/libraries/python/SFC/__init__.py b/resources/libraries/python/SFC/__init__.py
new file mode 100644
index 0000000000..e90d968cca
--- /dev/null
+++ b/resources/libraries/python/SFC/__init__.py
@@ -0,0 +1,16 @@
+# Copyright (c) 2017 Cisco and/or its affiliates.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at:
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+__init__ file for directory resources/libraries/python/SFC
+"""