TLDK udwfwd test case:

    - ip fragement for ipv4
    - ip reassemble for ipv4
    - ip checksum for ipv4
    - ip checksum for ipv6
    - ip fragment for ipv6

    added the genpcap.py script to generate the pcap files and corresponding
    test scripts

Change-Id: I01329dbb0ecd3c3a5dd7a63ef1dea01b2e717da5
Signed-off-by: qun wan <qun.wan@intel.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/resources/libraries/python/TLDK/UdpTest.py b/resources/libraries/python/TLDK/UdpTest.py
new file mode 100644
index 0000000000..adf0888724
--- /dev/null
+++ b/resources/libraries/python/TLDK/UdpTest.py
@@ -0,0 +1,126 @@
+# 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 the UDP test for TLDK on topology nodes.

+"""

+

+from scapy.utils import rdpcap

+from scapy.layers.inet import IP

+from scapy.layers.inet6 import IPv6

+

+from robot.libraries.BuiltIn import BuiltIn

+

+from resources.libraries.python.ssh import SSH

+from resources.libraries.python.TLDK.TLDKConstants import TLDKConstants as con

+from resources.libraries.python.topology import Topology

+

+class UdpTest(object):

+    """Test the TLDK UDP function."""

+

+    @staticmethod

+    def get_pcap_info(file_prefix):

+        """Get the Dest IP from the RX pcap file

+

+        :param file_prefix: the test case pcap file prefix

+        :type file_prefix: str

+        :returns: packet counts, dest ip, is or not ipv4

+        :rtype: tuple(int, str, bool).

+        """

+        exec_dir = BuiltIn().get_variable_value("${EXECDIR}")

+

+        rx_pcapfile = '{0}/{1}/{2}_rx.pcap' \

+            .format(exec_dir, con.TLDK_TESTCONFIG, file_prefix)

+        packets = rdpcap(rx_pcapfile)

+        count = len(packets)

+

+        ### the first packet

+        pkt = packets[0]

+        if pkt.type == 0x0800:

+            ### this is a IPv4 packet

+            dest_ip = pkt[IP].dst

+            is_ipv4 = True

+        elif pkt.type == 0x86dd:

+            ### this is a IPv6 packet

+            dest_ip = pkt[IPv6].dst

+            is_ipv4 = False

+

+        return count, dest_ip, is_ipv4

+

+    @staticmethod

+    def exec_the_udpfwd_test(dut_node, dut_if, file_prefix, \

+            dest_ip, is_ipv4=True):

+        """Execute the udpfwd on the dut_node.

+

+        :param dut_node: Will execute the udpfwd on this node.

+        :param dut_if: DUT interface name.

+        :param file_prefix: The test case config file prefix.

+        :param dest_ip: The UDP packet dest IP.

+        :param is_ipv4: Execute the IPv4 or IPv6 test.

+        :type dut_node: dict

+        :type dut_if: str

+        :type file_prefix: str

+        :type dest_ip: str

+        :type is_ipv4: bool

+        :returns: none.

+        :raises RuntimeError: If failed to execute udpfwd test on the dut node.

+        """

+        pci_address = Topology.get_interface_pci_addr(dut_node, dut_if)

+        ssh = SSH()

+        ssh.connect(dut_node)

+        if is_ipv4:

+            cmd = 'cd {0}/{4} && ./run_tldk.sh {0}/{5}/{2}_rx.pcap ' \

+                '{0}/{5}/{2}_tx.pcap {1} {0}/{5}/{2}_fe.cfg ' \

+                '{0}/{5}/{2}_be.cfg {3} NONE' \

+                .format(con.REMOTE_FW_DIR, pci_address, file_prefix, \

+                dest_ip, con.TLDK_SCRIPTS, con.TLDK_TESTCONFIG)

+        else:

+            cmd = 'cd {0}/{4} && ./run_tldk.sh {0}/{5}/{2}_rx.pcap ' \

+                '{0}/{5}/{2}_tx.pcap {1} {0}/{5}/{2}_fe.cfg ' \

+                '{0}/{5}/{2}_be.cfg NONE {3}' \

+                .format(con.REMOTE_FW_DIR, pci_address, file_prefix, \

+                dest_ip, con.TLDK_SCRIPTS, con.TLDK_TESTCONFIG)

+

+        (ret_code, _, _) = ssh.exec_command(cmd, timeout=600)

+        if ret_code != 0:

+            raise RuntimeError('Failed to execute udpfwd test at node {0}'

+                               .format(dut_node['host']))

+

+    @staticmethod

+    def get_the_test_result(dut_node, file_prefix):

+        """

+        After execute the udpfwd cmd, use this to get the test result.

+

+        :param dut_node: will get the test result in this dut node

+        :param dut_if: the dut interface name

+        :param file_prefix: the test case output file prefix

+        :type dut_node: dice

+        :type dut_if: str

+        :type file_prefix: str

+        :returns: str.

+        :rtype: str

+        :raises RuntimeError: If failed to get the test result.

+        """

+        ssh = SSH()

+        ssh.connect(dut_node)

+        cmd = 'cd {0}; tcpdump -nnnn -vvv -r ./{2}/{1}_tx.pcap | ' \

+            'grep \'udp sum ok\' | wc -l' \

+            .format(con.REMOTE_FW_DIR, file_prefix, con.TLDK_TESTCONFIG)

+

+        (ret_code, stdout, _) = ssh.exec_command(cmd, timeout=100)

+        if ret_code != 0:

+            raise RuntimeError('Failed to get test result at node {0}'

+                               .format(dut_node['host']))

+

+        return stdout