aboutsummaryrefslogtreecommitdiffstats
path: root/resources/traffic_scripts/send_icmp_check_gre_headers.py
diff options
context:
space:
mode:
Diffstat (limited to 'resources/traffic_scripts/send_icmp_check_gre_headers.py')
-rwxr-xr-xresources/traffic_scripts/send_icmp_check_gre_headers.py92
1 files changed, 92 insertions, 0 deletions
diff --git a/resources/traffic_scripts/send_icmp_check_gre_headers.py b/resources/traffic_scripts/send_icmp_check_gre_headers.py
new file mode 100755
index 0000000000..ccea9f5d9b
--- /dev/null
+++ b/resources/traffic_scripts/send_icmp_check_gre_headers.py
@@ -0,0 +1,92 @@
+#!/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 ICMPv4 packet from one interface to the other,
+where GRE encapsulated packet is expected.
+"""
+
+import sys
+
+from robot.api import logger
+from scapy.all import Ether
+from scapy.layers.inet import IP_PROTOS
+from scapy.layers.inet import IP
+from scapy.layers.inet import ICMP
+
+from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
+from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
+
+
+def main():
+ args = TrafficScriptArg(
+ ['tx_dst_mac', 'rx_dst_mac',
+ 'inner_src_ip', 'inner_dst_ip',
+ 'outer_src_ip', 'outer_dst_ip'])
+
+ tx_if = args.get_arg('tx_if')
+ rx_if = args.get_arg('rx_if')
+ tx_dst_mac = args.get_arg('tx_dst_mac')
+ rx_dst_mac = args.get_arg('rx_dst_mac')
+ inner_src_ip = args.get_arg('inner_src_ip')
+ inner_dst_ip = args.get_arg('inner_dst_ip')
+ outer_src_ip = args.get_arg('outer_src_ip')
+ outer_dst_ip = args.get_arg('outer_dst_ip')
+
+ rxq = RxQueue(rx_if)
+ txq = TxQueue(tx_if)
+ sent_packets = []
+
+ tx_pkt_raw = Ether(dst=tx_dst_mac) / \
+ IP(src=inner_src_ip, dst=inner_dst_ip) / \
+ ICMP()
+
+ sent_packets.append(tx_pkt_raw)
+ txq.send(tx_pkt_raw)
+ ether = rxq.recv(2)
+
+ if ether is None:
+ raise RuntimeError("ICMP echo Rx timeout")
+
+ # Check RX headers
+ if ether.dst != rx_dst_mac:
+ raise RuntimeError("Matching of received destination MAC unsuccessful.")
+ logger.debug("Comparison of received destination MAC: OK.")
+
+ if ether['IP'].src != outer_src_ip:
+ raise RuntimeError("Matching of received outer source IP unsuccessful.")
+ logger.debug("Comparison of received outer source IP: OK.")
+
+ if ether['IP'].dst != outer_dst_ip:
+ raise RuntimeError(
+ "Matching of received outer destination IP unsuccessful.")
+ logger.debug("Comparison of received outer destination IP: OK.")
+
+ if ether['IP'].proto != IP_PROTOS.gre:
+ raise RuntimeError("IP protocol is no GRE.")
+ logger.debug("Comparison of received GRE protocol: OK.")
+
+ if ether['IP']['GRE']['IP'].src != inner_src_ip:
+ raise RuntimeError("Matching of received inner source IP unsuccessful.")
+ logger.debug("Comparison of received inner source IP: OK.")
+
+ if ether['IP']['GRE']['IP'].dst != inner_dst_ip:
+ raise RuntimeError(
+ "Matching of received inner destination IP unsuccessful.")
+ logger.debug("Comparison of received inner destination IP: OK.")
+
+ sys.exit(0)
+
+
+if __name__ == "__main__":
+ main()