1 files changed, 112 insertions, 0 deletions
diff --git a/resources/traffic_scripts/ipv4_sweep_ping.py b/resources/traffic_scripts/ipv4_sweep_ping.py
new file mode 100755
index 0000000000..4b82a9b03e
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+++ b/resources/traffic_scripts/ipv4_sweep_ping.py
@@ -0,0 +1,112 @@
+#!/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 IPv4 sweep ping."""
+
+import sys
+import logging
+import os
+logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue,\
+    auto_pad, create_gratuitous_arp_request
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+from scapy.layers.inet import IP, ICMP
+from scapy.all import Ether, Raw
+
+
+def main():
+    # start_size - start size of the ICMPv4 echo data
+    # end_size - end size of the ICMPv4 echo data
+    # step - increment step
+    args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip',
+                             'start_size', 'end_size', 'step'])
+
+    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')
+    start_size = int(args.get_arg('start_size'))
+    end_size = int(args.get_arg('end_size'))
+    step = int(args.get_arg('step'))
+    echo_id = 0xa
+    # generate some random data buffer
+    data = bytearray(os.urandom(end_size))
+
+    sent_packets = []
+    pkt_send = create_gratuitous_arp_request(src_mac, src_ip)
+    sent_packets.append(pkt_send)
+    txq.send(pkt_send)
+
+    # send ICMP echo request with incremented data length and receive ICMP
+    # echo reply
+    for echo_seq in range(start_size, end_size+1, step):
+        pkt_send = auto_pad(Ether(src=src_mac, dst=dst_mac) /
+                            IP(src=src_ip, dst=dst_ip) /
+                            ICMP(id=echo_id, seq=echo_seq) /
+                            Raw(load=data[0:echo_seq]))
+        sent_packets.append(pkt_send)
+        txq.send(pkt_send)
+
+        ether = rxq.recv(ignore=sent_packets)
+        if ether is None:
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'ICMP echo reply seq {0} Rx timeout'.format(echo_seq))
+
+        if not ether.haslayer(IP):
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'Unexpected packet with no IPv4 received {0}'.format(
+                    ether.__repr__()))
+
+        ipv4 = ether['IP']
+
+        if not ipv4.haslayer(ICMP):
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'Unexpected packet with no ICMP received {0}'.format(
+                    ipv4.__repr__()))
+
+        icmpv4 = ipv4['ICMP']
+
+        if icmpv4.id != echo_id or icmpv4.seq != echo_seq:
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'Invalid ICMP echo reply received ID {0} seq {1} should be ' +
+                'ID {2} seq {3}, {0}'.format(icmpv4.id, icmpv4.seq, echo_id,
+                                             echo_seq))
+
+        chksum = icmpv4.chksum
+        del icmpv4.chksum
+        tmp = ICMP(str(icmpv4))
+        if tmp.chksum != chksum:
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'Invalid checksum {0} should be {1}'.format(chksum, tmp.chksum))
+        recv_payload_len = ipv4.len - 20 - 8
+        load = tmp['Raw'].load[0:recv_payload_len]
+        if load != data[0:echo_seq]:
+            rxq._proc.terminate()
+            raise RuntimeError(
+                'Received ICMP payload does not match sent payload')
+
+    rxq._proc.terminate()
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()