CSIT-227, CSIT-240 IPv4/IPv6 Multipath routing tests

  - add IPv4 Equal-cost multipath routing test
  - add IPv6 Equal-cost multipath routing test

Change-Id: I62eaf9983b7767e124f80af7d8c8652ffc460cf8
Signed-off-by: Patrik Hrnciar <phrnciar@cisco.com>

1 files changed, 131 insertions, 0 deletions

diff --git a/resources/traffic_scripts/send_icmp_check_multipath.py b/resources/traffic_scripts/send_icmp_check_multipath.py
new file mode 100755
index 0000000000..4e39efdfcd
--- /dev/null
+++ b/resources/traffic_scripts/send_icmp_check_multipath.py
@@ -0,0 +1,131 @@
+#!/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.
+
+"""Traffic script that sends an IP ICMPv4/ICMPv6 packets traffic
+and check if it is divided into two paths."""
+
+import sys
+import ipaddress
+
+from scapy.layers.inet import ICMP, IP
+from scapy.layers.inet6 import IPv6
+from scapy.all import Ether
+from scapy.layers.inet6 import ICMPv6EchoRequest
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def valid_ipv4(ip):
+    try:
+        ipaddress.IPv4Address(unicode(ip))
+        return True
+    except (AttributeError, ipaddress.AddressValueError):
+        return False
+
+
+def valid_ipv6(ip):
+    try:
+        ipaddress.IPv6Address(unicode(ip))
+        return True
+    except (AttributeError, ipaddress.AddressValueError):
+        return False
+
+
+def main():
+    """Send 100 IP ICMP packets traffic and check if it is divided into
+    two paths."""
+    args = TrafficScriptArg(
+        ['src_ip', 'dst_ip', 'tg_if1_mac', 'dut_if1_mac', 'dut_if2_mac',
+         'path_1_mac', 'path_2_mac'])
+
+    src_ip = args.get_arg('src_ip')
+    dst_ip = args.get_arg('dst_ip')
+    tg_if1_mac = args.get_arg('tg_if1_mac')
+    dut_if1_mac = args.get_arg('dut_if1_mac')
+    dut_if2_mac = args.get_arg('dut_if2_mac')
+    path_1_mac = args.get_arg('path_1_mac')
+    path_2_mac = args.get_arg('path_2_mac')
+    tx_if = args.get_arg('tx_if')
+    rx_if = args.get_arg('rx_if')
+    path_1_counter = 0
+    path_2_counter = 0
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+    sent_packets = []
+    ip_format = ''
+    pkt_raw = ''
+    separator = ''
+
+    if valid_ipv4(src_ip):
+        separator = '.'
+    elif valid_ipv6(src_ip):
+        separator = ':'
+    else:
+        raise ValueError("Source address not in correct format")
+
+    src_ip_base = (src_ip.rsplit(separator, 1))[0] + separator
+
+    for i in range(1, 101):
+        if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
+            pkt_raw = (Ether(src=tg_if1_mac, dst=dut_if1_mac) /
+                       IP(src=src_ip_base+str(i), dst=dst_ip) /
+                       ICMP())
+            ip_format = 'IP'
+        elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
+            pkt_raw = (Ether(src=tg_if1_mac, dst=dut_if1_mac) /
+                       IPv6(src=src_ip_base+str(i), dst=dst_ip) /
+                       ICMPv6EchoRequest())
+            ip_format = 'IPv6'
+        else:
+            raise ValueError("IP not in correct format")
+
+        sent_packets.append(pkt_raw)
+        txq.send(pkt_raw)
+        ether = rxq.recv(2)
+
+        if ether is None:
+            raise RuntimeError("ICMP echo Rx timeout")
+        if not ether.haslayer(ip_format):
+            raise RuntimeError("Not an IP packet received {0}"
+                               .format(ether.__repr__()))
+
+        if ether['Ethernet'].src != dut_if2_mac:
+            raise RuntimeError("Source MAC address error")
+
+        if ether['Ethernet'].dst == path_1_mac:
+            path_1_counter += 1
+        elif ether['Ethernet'].dst == path_2_mac:
+            path_2_counter += 1
+        else:
+            raise RuntimeError("Destination MAC address error")
+
+    if (path_1_counter + path_2_counter) != 100:
+        raise RuntimeError("Packet loss: recevied only {} packets of 100 "
+                           .format(path_1_counter + path_2_counter))
+
+    if path_1_counter == 0:
+        raise RuntimeError("Path 1 error!")
+
+    if path_2_counter == 0:
+        raise RuntimeError("Path 2 error!")
+
+    print "Path_1 counter: {}".format(path_1_counter)
+    print "Path_2 counter: {}".format(path_2_counter)
+
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()