X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=resources%2Ftraffic_scripts%2Fsend_icmp_check_arp.py;fp=resources%2Ftraffic_scripts%2Fsend_icmp_check_arp.py;h=4a3c442114f6cc43293528592d8533c0de49293d;hb=38b0e2f738a81decc9d32e4d6cac678506fd090b;hp=0000000000000000000000000000000000000000;hpb=c44aa8b85d0131ffea431d11229043ba6aff162d;p=csit.git diff --git a/resources/traffic_scripts/send_icmp_check_arp.py b/resources/traffic_scripts/send_icmp_check_arp.py new file mode 100755 index 0000000000..4a3c442114 --- /dev/null +++ b/resources/traffic_scripts/send_icmp_check_arp.py @@ -0,0 +1,118 @@ +#!/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 ICMP packet +from one interface and expects ARP on the other one. +""" + +import sys +import ipaddress + +from scapy.all import Ether +from scapy.layers.inet import ICMP, IP + +from resources.libraries.python.PacketVerifier import RxQueue, TxQueue +from resources.libraries.python.TrafficScriptArg import TrafficScriptArg + + +def valid_ipv4(ip): + """Check if IP address has the correct IPv4 address format. + + :param ip: IP address. + :type ip: str + :return: True in case of correct IPv4 address format, + otherwise return False. + :rtype: bool + """ + try: + ipaddress.IPv4Address(unicode(ip)) + return True + except (AttributeError, ipaddress.AddressValueError): + return False + + +def main(): + """Send IP ICMP packet from one traffic generator interface and expects + ARP on the other.""" + args = TrafficScriptArg( + ['tx_dst_mac', 'rx_dst_mac', 'tx_src_ip', 'tx_dst_ip', 'rx_arp_src_ip', + 'rx_arp_dst_ip']) + + tx_dst_mac = args.get_arg('tx_dst_mac') + rx_dst_mac = args.get_arg('rx_dst_mac') + src_ip = args.get_arg('tx_src_ip') + dst_ip = args.get_arg('tx_dst_ip') + tx_if = args.get_arg('tx_if') + rx_if = args.get_arg('rx_if') + rx_arp_src_ip = args.get_arg('rx_arp_src_ip') + rx_arp_dst_ip = args.get_arg('rx_arp_dst_ip') + + rxq = RxQueue(rx_if) + txq = TxQueue(tx_if) + + # Create empty IP ICMP packet + if valid_ipv4(src_ip) and valid_ipv4(dst_ip): + pkt_raw = Ether(dst=tx_dst_mac) / IP(src=src_ip, dst=dst_ip) / ICMP() + + # Send created packet on one interface and receive on the other + txq.send(pkt_raw) + + ether = rxq.recv(2) + + if ether is None: + raise RuntimeError("Ethernet frame Rx timeout") + + # ARP check + if ether['ARP'] is not None: + print("ARP packet received.") + else: + raise RuntimeError("Not an ARP packet received {0}" + .format(ether.__repr__())) + + # Compare data from packets + if ether['ARP'].op == 1: # 1 - who-has request + print("ARP request matched.") + else: + raise RuntimeError("Matching ARP request unsuccessful: {0}" + .format(ether.__repr__())) + + if ether['ARP'].hwsrc == rx_dst_mac: + print("Source MAC matched.") + else: + raise RuntimeError("Matching Source MAC unsuccessful: {0}" + .format(ether.__repr__())) + + if ether['ARP'].hwdst == "00:00:00:00:00:00": + print("Destination MAC matched.") + else: + raise RuntimeError("Matching Destination MAC unsuccessful: {0}" + .format(ether.__repr__())) + + if ether['ARP'].psrc == rx_arp_src_ip: + print("Source ARP IP address matched.") + else: + raise RuntimeError("Matching Source ARP IP address unsuccessful: {0}" + .format(ether.__repr__())) + + if ether['ARP'].pdst == rx_arp_dst_ip: + print("Destination ARP IP address matched.") + else: + raise RuntimeError("Matching Destination ARP IP address unsuccessful: " + "{0}".format(ether.__repr__())) + + sys.exit(0) + + +if __name__ == "__main__": + main()