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authorPeter Mikus <pmikus@cisco.com>2019-08-09 12:57:00 +0000
committerPeter Mikus <pmikus@cisco.com>2019-10-16 08:26:42 +0000
commitfba708653f0c3bdc01ffcd86a10e5aab379380a5 (patch)
treec8f99d33c65d86af66b0ef8177c9d34124ae6c26 /resources/traffic_scripts/send_ip_check_headers.py
parentf4604e91598ef6f914b7ce1ab57f7d44dc043460 (diff)
VPPD: GBP test case
Signed-off-by: Peter Mikus <pmikus@cisco.com> Change-Id: I020cdb6ced70a9c22773dfbe1662aecd2b744d2d
Diffstat (limited to 'resources/traffic_scripts/send_ip_check_headers.py')
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diff --git a/resources/traffic_scripts/send_ip_check_headers.py b/resources/traffic_scripts/send_ip_check_headers.py
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+++ b/resources/traffic_scripts/send_ip_check_headers.py
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+#!/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()