X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftraffic_scripts%2Ficmpv6_echo_req_resp.py;fp=resources%2Ftraffic_scripts%2Ficmpv6_echo_req_resp.py;h=0000000000000000000000000000000000000000;hp=195f666b381c69c3d7056e4466b78a7c39b04a91;hb=d68951ac245150eeefa6e0f4156e4c1b5c9e9325;hpb=ed0258a440cfad7023d643f717ab78ac568dc59b diff --git a/resources/traffic_scripts/icmpv6_echo_req_resp.py b/resources/traffic_scripts/icmpv6_echo_req_resp.py deleted file mode 100755 index 195f666b38..0000000000 --- a/resources/traffic_scripts/icmpv6_echo_req_resp.py +++ /dev/null @@ -1,190 +0,0 @@ -#!/usr/bin/env python - -# Copyright (c) 2018 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. - -"""Send ICMPv6 echo request from one TG port to DUT port or to another TG port - through DUT node(s) and send reply back. Also verify hop limit processing.""" - -import sys -import logging - -# pylint: disable=no-name-in-module -# pylint: disable=import-error -logging.getLogger("scapy.runtime").setLevel(logging.ERROR) - -from scapy.layers.inet6 import IPv6, ICMPv6ND_NA, ICMPv6ND_NS -from scapy.layers.inet6 import ICMPv6NDOptDstLLAddr -from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply -from scapy.all import Ether - -from resources.libraries.python.PacketVerifier import RxQueue, TxQueue -from resources.libraries.python.PacketVerifier import checksum_equal -from resources.libraries.python.TrafficScriptArg import TrafficScriptArg - - -def main(): - args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_nh_mac', 'dst_nh_mac', - 'src_ip', 'dst_ip', 'h_num'], ['is_dst_tg']) - - src_rxq = RxQueue(args.get_arg('tx_if')) - src_txq = TxQueue(args.get_arg('tx_if')) - - src_mac = args.get_arg('src_mac') - dst_mac = args.get_arg('dst_mac') - src_nh_mac = args.get_arg('src_nh_mac') - dst_nh_mac = args.get_arg('dst_nh_mac') - src_ip = args.get_arg('src_ip') - dst_ip = args.get_arg('dst_ip') - hop_num = int(args.get_arg('h_num')) - - is_dst_tg = True if args.get_arg('is_dst_tg') in ['True', ''] else False - dst_rxq = RxQueue(args.get_arg('rx_if')) if is_dst_tg else None - dst_txq = TxQueue(args.get_arg('rx_if')) if is_dst_tg else None - - hop_limit = 64 - echo_id = 0xa - echo_seq = 0x1 - - src_sent_packets = [] - dst_sent_packets = [] - - # send ICMPv6 neighbor advertisement message - pkt_send = (Ether(src=src_mac, dst='ff:ff:ff:ff:ff:ff') / - IPv6(src=src_ip, dst='ff02::1:ff00:2') / - ICMPv6ND_NA(tgt=src_ip, R=0) / - ICMPv6NDOptDstLLAddr(lladdr=src_mac)) - src_sent_packets.append(pkt_send) - src_txq.send(pkt_send) - - if is_dst_tg: - # send ICMPv6 neighbor advertisement message - pkt_send = (Ether(src=dst_mac, dst='ff:ff:ff:ff:ff:ff') / - IPv6(src=dst_ip, dst='ff02::1:ff00:2') / - ICMPv6ND_NA(tgt=dst_ip, R=0) / - ICMPv6NDOptDstLLAddr(lladdr=dst_mac)) - dst_sent_packets.append(pkt_send) - dst_txq.send(pkt_send) - - # send ICMPv6 echo request from first TG interface - pkt_send = (Ether(src=src_mac, dst=src_nh_mac) / - IPv6(src=src_ip, dst=dst_ip, hlim=hop_limit) / - ICMPv6EchoRequest(id=echo_id, seq=echo_seq)) - src_sent_packets.append(pkt_send) - src_txq.send(pkt_send) - - if is_dst_tg: - # receive ICMPv6 echo request on second TG interface - while True: - ether = dst_rxq.recv(2, dst_sent_packets) - if ether is None: - raise RuntimeError('ICMPv6 echo reply 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 not ether.haslayer(IPv6): - raise RuntimeError('Unexpected packet with no IPv6 received: {0}'. - format(ether.__repr__())) - - ipv6 = ether[IPv6] - - # verify hop limit processing - if ipv6.hlim != (hop_limit - hop_num): - raise RuntimeError('Invalid hop limit {0} should be {1}'. - format(ipv6.hlim, hop_limit - hop_num)) - - if not ipv6.haslayer(ICMPv6EchoRequest): - raise RuntimeError('Unexpected packet with no IPv6 ICMP received ' - '{0}'.format(ipv6.__repr__())) - - icmpv6 = ipv6[ICMPv6EchoRequest] - - # check identifier and sequence number - if icmpv6.id != echo_id or icmpv6.seq != echo_seq: - raise RuntimeError('Invalid ICMPv6 echo reply received ID {0} ' - 'seq {1} should be ID {2} seq {3}'. - format(icmpv6.id, icmpv6.seq, echo_id, echo_seq)) - - # verify checksum - cksum = icmpv6.cksum - del icmpv6.cksum - tmp = ICMPv6EchoRequest(str(icmpv6)) - if not checksum_equal(tmp.cksum, cksum): - raise RuntimeError('Invalid checksum {0} should be {1}'. - format(cksum, tmp.cksum)) - - # send ICMPv6 echo reply from second TG interface - pkt_send = (Ether(src=dst_mac, dst=dst_nh_mac) / - IPv6(src=dst_ip, dst=src_ip, hlim=(ipv6.hlim - 1)) / - ICMPv6EchoReply(id=echo_id, seq=echo_seq)) - dst_sent_packets.append(pkt_send) - dst_txq.send(pkt_send) - - # receive ICMPv6 echo reply on first TG interface - while True: - ether = src_rxq.recv(2, src_sent_packets) - if ether is None: - raise RuntimeError('ICMPv6 echo reply 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 not ether.haslayer(IPv6): - raise RuntimeError('Unexpected packet with no IPv6 layer received {0}'. - format(ether.__repr__())) - - ipv6 = ether[IPv6] - - # verify hop limit processing; destination node decrements hlim by one in - # outgoing ICMPv6 Echo Reply - directions = 2 if is_dst_tg else 1 - hop_limit_reply = hop_limit - directions * hop_num - 1 - if ipv6.hlim != hop_limit_reply: - raise RuntimeError('Invalid hop limit {0} should be {1}'. - format(ipv6.hlim, hop_limit_reply)) - - if not ipv6.haslayer(ICMPv6EchoReply): - raise RuntimeError('Unexpected packet with no IPv6 ICMP received {0}'. - format(ipv6.__repr__())) - - icmpv6 = ipv6[ICMPv6EchoReply] - - # check identifier and sequence number - if icmpv6.id != echo_id or icmpv6.seq != echo_seq: - raise RuntimeError('Invalid ICMPv6 echo reply received ID {0} ' - 'seq {1} should be ID {2} seq {3}'. - format(icmpv6.id, icmpv6.seq, echo_id, echo_seq)) - - # verify checksum - cksum = icmpv6.cksum - del icmpv6.cksum - tmp = ICMPv6EchoReply(str(icmpv6)) - if not checksum_equal(tmp.cksum, cksum): - raise RuntimeError('Invalid checksum {0} should be {1}'. - format(cksum, tmp.cksum)) - - sys.exit(0) - - -if __name__ == "__main__": - main()