1 files changed, 104 insertions, 0 deletions
diff --git a/resources/traffic_scripts/ipv6_ns.py b/resources/traffic_scripts/ipv6_ns.py
new file mode 100755
index 0000000000..dd1adad39e
--- /dev/null
+++ b/resources/traffic_scripts/ipv6_ns.py
@@ -0,0 +1,104 @@
+#!/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 for IPv6 Neighbor Solicitation test."""
+
+import sys
+import logging
+logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+from scapy.layers.inet6 import IPv6, ICMPv6ND_NA, ICMPv6ND_NS
+from scapy.layers.inet6 import ICMPv6NDOptDstLLAddr, ICMPv6NDOptSrcLLAddr
+from scapy.all import Ether
+
+
+def main():
+    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')
+
+    sent_packets = []
+
+    # send ICMPv6 neighbor solicitation message
+    pkt_send = (Ether(src=src_mac, dst='ff:ff:ff:ff:ff:ff') /
+                      IPv6(src=src_ip, dst='ff02::1:ff00:2') /
+                      ICMPv6ND_NS(tgt=dst_ip) /
+                      ICMPv6NDOptSrcLLAddr(lladdr=src_mac))
+    sent_packets.append(pkt_send)
+    txq.send(pkt_send)
+
+    # receive ICMPv6 neighbor advertisement message
+    ether = rxq.recv(2, sent_packets)
+    if ether is None:
+        rxq._proc.terminate()
+        raise RuntimeError('ICMPv6 echo reply Rx timeout')
+
+    if not ether.haslayer(IPv6):
+        rxq._proc.terminate()
+        raise RuntimeError('Unexpected packet with no IPv6 received {0}'.format(
+            ether.__repr__()))
+
+    ipv6 = ether['IPv6']
+
+    if not ipv6.haslayer(ICMPv6ND_NA):
+        rxq._proc.terminate()
+        raise RuntimeError(
+            'Unexpected packet with no ICMPv6 ND-NA received {0}'.format(
+                ipv6.__repr__()))
+
+    icmpv6_na = ipv6['ICMPv6 Neighbor Discovery - Neighbor Advertisement']
+
+    # verify target address
+    if icmpv6_na.tgt != dst_ip:
+        rxq._proc.terminate()
+        raise RuntimeError('Invalid target address {0} should be {1}'.format(
+            icmpv6_na.tgt, dst_ip))
+
+    if not icmpv6_na.haslayer(ICMPv6NDOptDstLLAddr):
+        rxq._proc.terminate()
+        raise RuntimeError(
+            'Missing Destination Link-Layer Address option in ICMPv6 ' +
+            'Neighbor Advertisement {0}'.format(icmpv6_na.__repr__()))
+
+    option = 'ICMPv6 Neighbor Discovery Option - Destination Link-Layer Address'
+    dst_ll_addr = icmpv6_na[option]
+
+    # verify destination link-layer address field
+    if dst_ll_addr.lladdr != dst_mac:
+        rxq._proc.terminate()
+        raise RuntimeError('Invalid lladdr {0} should be {1}'.format(
+            dst_ll_addr.lladdr, dst_mac))
+
+    # verify checksum
+    cksum = icmpv6_na.cksum
+    del icmpv6_na.cksum
+    tmp = ICMPv6ND_NA(str(icmpv6_na))
+    if tmp.cksum != cksum:
+        rxq._proc.terminate()
+        raise RuntimeError(
+            'Invalid checksum {0} should be {1}'.format(cksum, tmp.cksum))
+
+    rxq._proc.terminate()
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()