1 files changed, 151 insertions, 0 deletions
diff --git a/resources/traffic_scripts/send_ip_check_headers.py b/resources/traffic_scripts/send_ip_check_headers.py
new file mode 100755
index 0000000000..816c0053e9
--- /dev/null
+++ b/resources/traffic_scripts/send_ip_check_headers.py
@@ -0,0 +1,151 @@
+#!/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 packet from one interface
+to the other. Source and destination IP addresses and source and destination
+MAC addresses are checked in received packet.
+"""
+
+import sys
+
+import ipaddress
+from robot.api import logger
+from scapy.layers.inet import IP
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, ICMPv6ND_NS
+from scapy.layers.l2 import Ether, Dot1Q
+
+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 IP ICMP packet from one traffic generator interface to the other."""
+    args = TrafficScriptArg(
+        ['tg_src_mac', 'tg_dst_mac', 'src_ip', 'dst_ip', 'dut_if1_mac',
+         'dut_if2_mac'],
+        ['encaps_tx', 'vlan_tx', 'vlan_outer_tx',
+         'encaps_rx', 'vlan_rx', 'vlan_outer_rx'])
+
+    tx_src_mac = args.get_arg('tg_src_mac')
+    tx_dst_mac = args.get_arg('dut_if1_mac')
+    rx_dst_mac = args.get_arg('tg_dst_mac')
+    rx_src_mac = args.get_arg('dut_if2_mac')
+    src_ip = args.get_arg('src_ip')
+    dst_ip = args.get_arg('dst_ip')
+    tx_if = args.get_arg('tx_if')
+    rx_if = args.get_arg('rx_if')
+
+    encaps_tx = args.get_arg('encaps_tx')
+    vlan_tx = args.get_arg('vlan_tx')
+    vlan_outer_tx = args.get_arg('vlan_outer_tx')
+    encaps_rx = args.get_arg('encaps_rx')
+    vlan_rx = args.get_arg('vlan_rx')
+    vlan_outer_rx = args.get_arg('vlan_outer_rx')
+
+    rxq = RxQueue(rx_if)
+    txq = TxQueue(tx_if)
+    sent_packets = []
+    ip_format = ''
+    pkt_raw = Ether(src=tx_src_mac, dst=tx_dst_mac)
+    if encaps_tx == 'Dot1q':
+        pkt_raw /= Dot1Q(vlan=int(vlan_tx))
+    elif encaps_tx == 'Dot1ad':
+        pkt_raw.type = 0x88a8
+        pkt_raw /= Dot1Q(vlan=vlan_outer_tx)
+        pkt_raw /= Dot1Q(vlan=vlan_tx)
+    if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
+        pkt_raw /= IP(src=src_ip, dst=dst_ip, proto=61)
+        ip_format = IP
+    elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
+        pkt_raw /= IPv6(src=src_ip, dst=dst_ip)
+        ip_format = IPv6
+    else:
+        raise ValueError("IP not in correct format")
+
+    sent_packets.append(pkt_raw)
+    txq.send(pkt_raw)
+
+    while True:
+        if tx_if == rx_if:
+            ether = rxq.recv(2, ignore=sent_packets)
+        else:
+            ether = rxq.recv(2)
+        if ether is None:
+            raise RuntimeError('ICMP echo Rx timeout')
+
+        if ether.haslayer(ICMPv6ND_NS):
+            # read another packet in the queue if the current one is ICMPv6ND_NS
+            continue
+        else:
+            # otherwise process the current packet
+            break
+
+    if rx_dst_mac == ether[Ether].dst and rx_src_mac == ether[Ether].src:
+        logger.trace("MAC matched")
+    else:
+        raise RuntimeError("Matching packet unsuccessful: {0}".
+                           format(ether.__repr__()))
+
+    if encaps_rx == 'Dot1q':
+        if ether[Dot1Q].vlan == int(vlan_rx):
+            logger.trace("VLAN matched")
+        else:
+            raise RuntimeError('Ethernet frame with wrong VLAN tag ({}-'
+                               'received, {}-expected):\n{}'.
+                               format(ether[Dot1Q].vlan, vlan_rx,
+                                      ether.__repr__()))
+        ip = ether[Dot1Q].payload
+    elif encaps_rx == 'Dot1ad':
+        raise NotImplementedError()
+    else:
+        ip = ether.payload
+
+    if not isinstance(ip, ip_format):
+        raise RuntimeError("Not an IP packet received {0}".
+                           format(ip.__repr__()))
+
+    # Compare data from packets
+    if src_ip == ip.src:
+        logger.trace("Src IP matched")
+    else:
+        raise RuntimeError("Matching Src IP unsuccessful: {} != {}".
+                           format(src_ip, ip.src))
+
+    if dst_ip == ip.dst:
+        logger.trace("Dst IP matched")
+    else:
+        raise RuntimeError("Matching Dst IP unsuccessful: {} != {}".
+                           format(dst_ip, ip.dst))
+
+    sys.exit(0)
+
+
+if __name__ == "__main__":
+    main()