WIP:Infrastructure for supporting more K8S Tests.

This patch add multiple changes to ViNePerf to support following tests.
1. External virtual switch - not managed by Vineperf.
2. CNI not based on virtual switch
3. Fixed bugs after successful testing.
4. Pylint issues fixed
4. Fix some license-content and comments

Signed-off-by: Sridhar K. N. Rao <sridhar.rao@spirent.com>
Change-Id: Ie01735f99c0687cc812eae8e67ee2353347924f2

2 files changed, 191 insertions, 0 deletions

diff --git a/tools/extvswitchflctl.py b/tools/extvswitchflctl.py
new file mode 100644
index 00000000..56eeafd0
--- /dev/null
+++ b/tools/extvswitchflctl.py
@@ -0,0 +1,129 @@
+"""
+Tool to configure flows for Kubernetes Usecases.
+"""
+
+from tools import tasks
+from conf import settings as S
+
+class ExtVswitchFlowCtl(tasks.Process):
+    """
+    Virtual Switch Flow Control
+    """
+    def __init__(self):
+        """
+        Initialization
+        """
+        super().__init__()
+        self._vpp_ctl = ['sudo', S.getValue('EXT_VSWITCH_VPP_FLOWCTL')]
+        self._ovs_ctl = ['sudo', S.getValue('EXT_VSWITCH_OVS_FLOWCTL')]
+
+    def get_vpp_interfaces(self):
+        """
+        Get VPP interfaces Names
+        """
+        ifargs = ['show', 'interface']
+        output = self.run_vppctl(ifargs)
+        ifaces = output[0].split('\n')
+        pifaces = []
+        vifaces = []
+        for iface in ifaces:
+            name = iface.split()[0]
+            if 'Name' in name or 'local' in name:
+                continue
+            if 'Ethernet' in name:
+                pifaces.append(name)
+            if 'memif' in name:
+                vifaces.append(name)
+        assert len(vifaces) == 2 or len(vifaces) == 4
+        assert len(pifaces) == 2
+        assert pifaces[0][:-1] in pifaces[1][:-1]
+        return pifaces, vifaces
+
+    def add_connections(self):
+        """
+        Add Connections of OVS or VPP
+        """
+        if 'VPP' in S.getValue('EXT_VSWITCH_TYPE'):
+            self.add_vpp_xconnect()
+        else:
+            self.add_ovs_xconnect()
+
+    def add_ovs_xconnect(self):
+        """
+        Add connections to OVS
+        """
+        entries = [['--timeout', '10', '-o', 'OpenFlow13', 'add-flow',
+                    S.getValue('EXT_VSWITCH_OVS_BRIDGE'),
+                    'in_port=1,idle_timeout=0,action=output:3'],
+                   ['--timeout', '10', '-o', 'OpenFlow13', 'add-flow',
+                    S.getValue('EXT_VSWITCH_OVS_BRIDGE'),
+                    'in_port=3,idle_timeout=0,action=output:1'],
+                   ['--timeout', '10', '-o', 'OpenFlow13', 'add-flow',
+                    S.getValue('EXT_VSWITCH_OVS_BRIDGE'),
+                    'in_port=2,idle_timeout=0,action=output:4'],
+                   ['--timeout', '10', '-o', 'OpenFlow13', 'add-flow',
+                    S.getValue('EXT_VSWITCH_OVS_BRIDGE'),
+                    'in_port=4,idle_timeout=0,action=output:2']]
+        for entry in entries:
+            self.run_ovsfctl(entry)
+
+    def add_vpp_xconnect(self):
+        """
+        Add Connections to VPP
+        """
+        pifaces, vifaces = self.get_vpp_interfaces()
+        # Bring Physical interface up - In case it is down.
+        for piface in pifaces:
+            ifargs = ['set', 'interface', 'state', piface, 'up']
+            self.run_vppctl(ifargs)
+        if len(vifaces) == 2:
+            entries = [['test', 'l2patch', 'rx',
+                        pifaces[0], 'tx', vifaces[0]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[0], 'tx', pifaces[0]],
+                       ['test', 'l2patch', 'rx',
+                        pifaces[1], 'tx', vifaces[1]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[1], 'tx', pifaces[1]]]
+        elif len(vifaces) == 4:
+            entries = [['test', 'l2patch', 'rx',
+                        pifaces[0], 'tx', vifaces[0]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[0], 'tx', pifaces[0]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[1], 'tx', vifaces[2]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[2], 'tx', vifaces[1]],
+                       ['test', 'l2patch', 'rx',
+                        pifaces[1], 'tx', vifaces[3]],
+                       ['test', 'l2patch', 'rx',
+                        vifaces[3], 'tx', pifaces[1]]]
+
+        for entry in entries:
+            self.run_vppctl(entry)
+
+    def run_ovsfctl(self, args, check_error=False):
+        """Run ``ovs-ofctl`` with supplied arguments.
+
+        :param args: Arguments to pass to ``vppctl``
+        :param check_error: Throw exception on error
+
+        :return: None
+        """
+        cmd = self._ovs_ctl + args
+        return tasks.run_task(cmd, self._logger,
+                              'Running ovs-ofctl...',
+                              check_error)
+
+    def run_vppctl(self, args, check_error=False):
+        """Run ``vppctl`` with supplied arguments.
+
+        :param args: Arguments to pass to ``vppctl``
+        :param check_error: Throw exception on error
+
+        :return: None
+        """
+        cmd = self._vpp_ctl + args
+        return tasks.run_task(cmd, self._logger,
+                              'Running vppctl...',
+                              check_error)
diff --git a/tools/pkt_fwd/dummy.py b/tools/pkt_fwd/dummy.py
new file mode 100644
index 00000000..97ffc666
--- /dev/null
+++ b/tools/pkt_fwd/dummy.py
@@ -0,0 +1,62 @@
+# Copyright 2021 Spirent Communications
+#
+# 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.
+
+"""VSPERF Dummy Pkt-Fwd.
+"""
+
+import logging
+from conf import settings
+
+_LOGGER = logging.getLogger(__name__)
+
+class Dummy(IPktFwd):
+    """Dummy implementation
+
+    """
+
+    _logger = logging.getLogger()
+
+    def __init__(self, guest=False):
+        self._logger.info("Initializing Dummy...")
+
+    def start(self):
+        """See IPktFwd for general description
+
+        Activates testpmd.
+        """
+        self._logger.info("Starting Dummy...")
+
+    def start_for_guest(self):
+        """See IPktFwd for general description
+
+        Activates testpmd for guest config
+        """
+        self._logger.info("Starting Dummy for one guest...")
+
+    def stop(self):
+        """See IPktFwd for general description
+
+        Kills testpmd.
+        """
+        self._logger.info("Stopping Dummy ....")
+
+    # Method could be a function
+    # pylint: disable=no-self-use
+    def get_version(self):
+        """
+        Get product version
+        :return: None
+        """
+        # No way to read Dummy version
+        return []