Sample test suite for vpp sample plugin (macswap)

[csit.git] / resources / traffic_scripts / macswap_check.py

diff --git a/resources/traffic_scripts/macswap_check.py b/resources/traffic_scripts/macswap_check.py
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+++ b/resources/traffic_scripts/macswap_check.py
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+#!/usr/bin/env python
+
+# Copyright (c) 2016 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.
+
+"""Macswap test."""
+
+from scapy.all import Ether, IP
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+def check_macswap(pkt_send, pkt_recv):
+    """Compare MAC addresses of sent and received packet.
+
+    :param pkt_send: Sent packet.
+    :param pkt_recv: Received packet.
+    :type pkt_send: Ether
+    :type pkt_recv: Ether
+    """
+    print "Comparing following packets:"
+    pkt_send.show2()
+    pkt_recv.show2()
+
+    if pkt_send.dst != pkt_recv.src or pkt_send.src != pkt_recv.dst:
+        raise RuntimeError("MAC addresses were not swapped.")
+
+
+def main():
+    """Main function."""
+    args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip'])
+
+    rxq = RxQueue(args.get_arg('rx_if'))
+    txq = TxQueue(args.get_arg('tx_if'))
+
+    src_mac = args.get_arg('src_mac')
+    dst_mac = args.get_arg('dst_mac')
+    src_ip = args.get_arg('src_ip')
+    dst_ip = args.get_arg('dst_ip')
+
+    pkt_send = (Ether(src=src_mac, dst=dst_mac) /
+                    IP(src=src_ip, dst=dst_ip, proto=61))
+
+    sent_packets = []
+    sent_packets.append(pkt_send)
+    txq.send(pkt_send)
+
+    pkt_recv = rxq.recv(ignore=sent_packets)
+
+    if pkt_recv is None:
+        raise RuntimeError('Timeout waiting for packet')
+
+    check_macswap(pkt_send, pkt_recv)
+
+if __name__ == "__main__":
+    main()