3 # Copyright (c) 2016 Cisco and/or its affiliates.
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at:
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
16 """Traffic script for IPv6 sweep ping."""
22 # pylint: disable=no-name-in-module
23 # pylint: disable=import-error
24 logging.getLogger("scapy.runtime").setLevel(logging.ERROR)
26 from scapy.all import Ether
27 from scapy.layers.inet6 import IPv6, ICMPv6ND_NA, ICMPv6ND_NS
28 from scapy.layers.inet6 import ICMPv6NDOptDstLLAddr
29 from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply
31 from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
32 from resources.libraries.python.PacketVerifier import checksum_equal
33 from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
37 # start_size - start size of the ICMPv6 echo data
38 # end_size - end size of the ICMPv6 echo data
39 # step - increment step
40 args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip',
41 'start_size', 'end_size', 'step'])
43 rxq = RxQueue(args.get_arg('rx_if'))
44 txq = TxQueue(args.get_arg('tx_if'))
46 src_mac = args.get_arg('src_mac')
47 dst_mac = args.get_arg('dst_mac')
48 src_ip = args.get_arg('src_ip')
49 dst_ip = args.get_arg('dst_ip')
50 start_size = int(args.get_arg('start_size'))
51 end_size = int(args.get_arg('end_size'))
52 step = int(args.get_arg('step'))
54 # generate some random data buffer
55 data = bytearray(os.urandom(end_size))
57 # send ICMPv6 neighbor advertisement message
59 pkt_send = (Ether(src=src_mac, dst=dst_mac) /
60 IPv6(src=src_ip, dst=dst_ip) /
61 ICMPv6ND_NA(tgt=src_ip, R=0) /
62 ICMPv6NDOptDstLLAddr(lladdr=src_mac))
63 sent_packets.append(pkt_send)
66 # send ICMPv6 echo request with incremented data length and receive ICMPv6
68 for echo_seq in range(start_size, end_size + 1, step):
69 pkt_send = (Ether(src=src_mac, dst=dst_mac) /
70 IPv6(src=src_ip, dst=dst_ip) /
71 ICMPv6EchoRequest(id=echo_id, seq=echo_seq,
72 data=data[0:echo_seq]))
73 sent_packets.append(pkt_send)
77 ether = rxq.recv(ignore=sent_packets)
79 raise RuntimeError('ICMPv6 echo reply seq {0} '
80 'Rx timeout'.format(echo_seq))
82 if ether.haslayer(ICMPv6ND_NS):
83 # read another packet in the queue in case of ICMPv6ND_NS packet
86 # otherwise process the current packet
89 if not ether.haslayer(IPv6):
90 raise RuntimeError('Unexpected packet with no IPv6 layer '
91 'received: {0}'.format(ether.__repr__()))
95 if not ipv6.haslayer(ICMPv6EchoReply):
96 raise RuntimeError('Unexpected packet with no ICMPv6 echo reply '
97 'layer received: {0}'.format(ipv6.__repr__()))
99 icmpv6 = ipv6[ICMPv6EchoReply]
101 if icmpv6.id != echo_id or icmpv6.seq != echo_seq:
102 raise RuntimeError('ICMPv6 echo reply with invalid data received: '
103 'ID {0} seq {1} should be ID {2} seq {3}, {0}'.
104 format(icmpv6.id, icmpv6.seq, echo_id,
109 tmp = ICMPv6EchoReply(str(icmpv6))
110 if not checksum_equal(tmp.cksum, cksum):
111 raise RuntimeError('Invalid checksum: {0} should be {1}'.
112 format(cksum, tmp.cksum))
114 sent_packets.remove(pkt_send)
119 if __name__ == "__main__":