diff options
Diffstat (limited to 'resources')
| -rw-r--r-- | resources/libraries/robot/shared/traffic.robot | 7 | ||||
| -rwxr-xr-x | resources/traffic_scripts/send_ip_check_headers.py | 151 |
2 files changed, 155 insertions, 3 deletions
diff --git a/resources/libraries/robot/shared/traffic.robot b/resources/libraries/robot/shared/traffic.robot index b3e030986e..5d11618f62 100644 --- a/resources/libraries/robot/shared/traffic.robot +++ b/resources/libraries/robot/shared/traffic.robot @@ -53,6 +53,8 @@ | | ... | - vlan_rx - VLAN (inner) tag on RX side (Optional). Type: integer | | ... | - vlan_outer_rx - .1AD VLAN (outer) tag on RX side (Optional). | | ... | Type: integer +| | ... | - traffic_script - Scapy Traffic script used for validation. +| | ... | Type: string | | ... | | ... | *Return:* | | ... | - No value returned @@ -68,6 +70,7 @@ | | ... | ${rx_dst_mac} | ${encaps_tx}=${EMPTY} | ${vlan_tx}=${EMPTY} | | ... | ${vlan_outer_tx}=${EMPTY} | ${encaps_rx}=${EMPTY} | | ... | ${vlan_rx}=${EMPTY} | ${vlan_outer_rx}=${EMPTY} +| | ... | ${traffic_script}=send_icmp_check_headers | | ... | | ${tx_port_name}= | Get interface name | ${tg_node} | ${tx_src_port} | | ${rx_port_name}= | Get interface name | ${tg_node} | ${rx_port} @@ -89,8 +92,7 @@ | | ${args}= | Run Keyword If | '${vlan_outer_rx}' == '${EMPTY}' | | | ... | Set Variable | ${args} | | ... | ELSE | Catenate | ${args} | --vlan_outer_rx ${vlan_outer_rx} -| | Run Traffic Script On Node | send_icmp_check_headers.py | ${tg_node} | -| | ... | ${args} +| | Run Traffic Script On Node | ${traffic_script}.py | ${tg_node} | ${args} | Packet transmission from port to port should fail | | [Documentation] | Sends packet from ip (with specified mac) to ip\ @@ -709,7 +711,6 @@ | | Run Traffic Script On Node | | ... | send_icmp_check_gre_headers.py | ${tg_node} | ${args} - | Send GRE and check received ICMPv4 header | | [Documentation] | Send IPv4 ICMPv4 packet encapsulated into GRE and \ | | ... | check IP, MAC headers on received packed. diff --git a/resources/traffic_scripts/send_ip_check_headers.py b/resources/traffic_scripts/send_ip_check_headers.py new file mode 100755 index 0000000000..816c0053e9 --- /dev/null +++ b/resources/traffic_scripts/send_ip_check_headers.py @@ -0,0 +1,151 @@ +#!/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() |