X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftraffic_scripts%2Fcheck_ra_packet.py;h=9717c7db95b021f27cf8db807b866737d84a6c85;hp=d95ef2d2f5daae1044c3e86004094aaf011272e4;hb=HEAD;hpb=8be64446049878a0fb4a91a3a8b0481e75b20205 diff --git a/resources/traffic_scripts/check_ra_packet.py b/resources/traffic_scripts/check_ra_packet.py deleted file mode 100755 index d95ef2d2f5..0000000000 --- a/resources/traffic_scripts/check_ra_packet.py +++ /dev/null @@ -1,87 +0,0 @@ -#!/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. - -"""Router advertisement check script.""" - -import sys -import ipaddress - -from resources.libraries.python.PacketVerifier import RxQueue -from resources.libraries.python.TrafficScriptArg import TrafficScriptArg - - -def mac_to_ipv6_linklocal(mac): - """Transfer MAC address into specific link-local IPv6 address. - - :param mac: MAC address to be transferred. - :type mac: str - :return: IPv6 link-local address. - :rtype: str - """ - # Remove the most common delimiters: dots, dashes, etc. - mac_value = int(mac.translate(None, ' .:-'), 16) - - # Split out the bytes that slot into the IPv6 address - # XOR the most significant byte with 0x02, inverting the - # Universal / Local bit - high2 = mac_value >> 32 & 0xffff ^ 0x0200 - high1 = mac_value >> 24 & 0xff - low1 = mac_value >> 16 & 0xff - low2 = mac_value & 0xffff - - return 'fe80::{:04x}:{:02x}ff:fe{:02x}:{:04x}'.format( - high2, high1, low1, low2) - - -def main(): - """Check packets on specific port and look for the Router Advertisement - part. - """ - - args = TrafficScriptArg(['src_mac']) - - rx_if = args.get_arg('rx_if') - src_mac = args.get_arg('src_mac') - rxq = RxQueue(rx_if) - - ether = rxq.recv(8) - - # Check whether received packet contains layer RA and check other values - if ether is None: - raise RuntimeError('ICMP echo Rx timeout') - - if not ether.haslayer('ICMPv6ND_RA'): - raise RuntimeError('Not an RA packet received {0}' - .format(ether.__repr__())) - - address = ipaddress.IPv6Address(unicode(ether['IPv6'].src)) - link_local = ipaddress.IPv6Address(unicode(mac_to_ipv6_linklocal(src_mac))) - - if address != link_local: - raise RuntimeError( - 'Source address ({0}) not matching link local address({1})'.format( - address, link_local)) - - if ether['IPv6'].hlim != 255: - raise RuntimeError('Hop limit not correct: {0}!=255'.format( - ether['IPv6'].hlim)) - - ra_code = ether['ICMPv6 Neighbor Discovery - Router Advertisement'].code - if ra_code != 0: - raise RuntimeError('ICMP code: {0} not correct. '.format(ra_code)) - - sys.exit(0) - -if __name__ == "__main__": - main()