+++ /dev/null
-#!/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 DHCPv6 proxy packets."""
-
-from scapy.layers.inet import Ether
-from scapy.layers.inet6 import IPv6, ICMPv6ND_NA, ICMPv6ND_NS
-from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply
-
-
-from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
-from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
-
-
-def imcpv6nd_solicit(tx_if, src_mac, dst_mac, src_ip, dst_ip):
- """Send ICMPv6 Neighbor Solicitation packet and expect a response
- from the proxy.
-
- :param tx_if: Interface on TG.
- :param src_mac: MAC address of TG interface.
- :param dst_mac: MAC address of proxy interface.
- :param src_ip: IP address of TG interface.
- :param dst_ip: IP address of proxied interface.
- :type tx_if: str
- :type src_mac: str
- :type dst_mac: str
- :type src_ip: str
- :type dst_ip: str
- :raises RuntimeError: If the received packet is not correct.
- """
-
- rxq = RxQueue(tx_if)
- txq = TxQueue(tx_if)
-
- sent_packets = []
-
- icmpv6nd_solicit_pkt = (Ether(src=src_mac, dst=dst_mac) /
- IPv6(src=src_ip) /
- ICMPv6ND_NS(tgt=dst_ip))
-
- sent_packets.append(icmpv6nd_solicit_pkt)
- txq.send(icmpv6nd_solicit_pkt)
-
- ether = None
- for _ in range(5):
- ether = rxq.recv(3, ignore=sent_packets)
- if not ether:
- continue
- if ether.haslayer(ICMPv6ND_NS):
- # read another packet in the queue in case of ICMPv6ND_NS packet
- continue
- else:
- # otherwise process the current packet
- break
-
- if ether is None:
- raise RuntimeError('ICMPv6ND Proxy response timeout.')
-
- if ether.src != dst_mac:
- raise RuntimeError("Source MAC address error: {} != {}".
- format(ether.src, dst_mac))
- print "Source MAC address: OK."
-
- if ether.dst != src_mac:
- raise RuntimeError("Destination MAC address error: {} != {}".
- format(ether.dst, src_mac))
- print "Destination MAC address: OK."
-
- if ether[IPv6].src != dst_ip:
- raise RuntimeError("Source IP address error: {} != {}".
- format(ether[IPv6].src, dst_ip))
- print "Source IP address: OK."
-
- if ether[IPv6].dst != src_ip:
- raise RuntimeError("Destination IP address error: {} != {}".
- format(ether[IPv6].dst, src_ip))
- print "Destination IP address: OK."
-
- try:
- target_addr = ether[IPv6][ICMPv6ND_NA].tgt
- except (KeyError, AttributeError):
- raise RuntimeError("Not an ICMPv6ND Neighbor Advertisement packet.")
-
- if target_addr != dst_ip:
- raise RuntimeError("ICMPv6 field 'Target address' error: {} != {}".
- format(target_addr, dst_ip))
- print "Target address field: OK."
-
-
-def ipv6_ping(src_if, dst_if, src_mac, dst_mac,
- proxy_to_src_mac, proxy_to_dst_mac, src_ip, dst_ip):
- """Sends ICMPv6 Echo Request, receive it and send a reply.
-
- :param src_if: First TG interface on link to DUT.
- :param dst_if: Second TG interface on link to DUT.
- :param src_mac: MAC address of first interface.
- :param dst_mac: MAC address of second interface.
- :param proxy_to_src_mac: MAC address of first proxy interface on DUT.
- :param proxy_to_dst_mac: MAC address of second proxy interface on DUT.
- :param src_ip: IP address of first interface.
- :param dst_ip: IP address of second interface.
- :type src_if: str
- :type dst_if: str
- :type src_mac: str
- :type dst_mac: str
- :type proxy_to_src_mac: str
- :type proxy_to_dst_mac: str
- :type src_ip: str
- :type dst_ip: str
- :raises RuntimeError: If a received packet is not correct.
- """
- rxq = RxQueue(dst_if)
- txq = TxQueue(src_if)
-
- icmpv6_ping_pkt = (Ether(src=src_mac, dst=proxy_to_src_mac) /
- IPv6(src=src_ip, dst=dst_ip) /
- ICMPv6EchoRequest())
-
- txq.send(icmpv6_ping_pkt)
-
- ether = None
- while True:
- ether = rxq.recv(3)
- if not ether:
- continue
- if ether.haslayer(ICMPv6ND_NS):
- # read another packet in the queue in case of ICMPv6ND_NS packet
- continue
- else:
- # otherwise process the current packet
- break
-
- if ether is None:
- raise RuntimeError('ICMPv6 Echo Request timeout.')
- try:
- ether[IPv6]["ICMPv6 Echo Request"]
- except KeyError:
- raise RuntimeError("Received packet is not an ICMPv6 Echo Request.")
- print "ICMP Echo: OK."
-
- rxq = RxQueue(src_if)
- txq = TxQueue(dst_if)
-
- icmpv6_ping_pkt = (Ether(src=dst_mac, dst=proxy_to_dst_mac) /
- IPv6(src=dst_ip, dst=src_ip) /
- ICMPv6EchoReply())
-
- txq.send(icmpv6_ping_pkt)
-
- ether = None
- while True:
- ether = rxq.recv(3)
- if not ether:
- continue
- if ether.haslayer(ICMPv6ND_NS):
- # read another packet in the queue in case of ICMPv6ND_NS packet
- continue
- else:
- # otherwise process the current packet
- break
-
- if ether is None:
- raise RuntimeError('DHCPv6 SOLICIT timeout')
- try:
- ether[IPv6]["ICMPv6 Echo Reply"]
- except KeyError:
- raise RuntimeError("Received packet is not an ICMPv6 Echo Reply.")
-
- print "ICMP Reply: OK."
-
-
-def main():
- """Send DHCPv6 proxy messages."""
-
- args = TrafficScriptArg(['src_ip', 'dst_ip', 'src_mac', 'dst_mac',
- 'proxy_to_src_mac', 'proxy_to_dst_mac'])
-
- src_if = args.get_arg('tx_if')
- dst_if = args.get_arg('rx_if')
- src_ip = args.get_arg("src_ip")
- dst_ip = args.get_arg("dst_ip")
- src_mac = args.get_arg('src_mac')
- dst_mac = args.get_arg('dst_mac')
- proxy_to_src_mac = args.get_arg('proxy_to_src_mac')
- proxy_to_dst_mac = args.get_arg('proxy_to_dst_mac')
-
- # Neighbor solicitation
- imcpv6nd_solicit(src_if, src_mac, proxy_to_src_mac, src_ip, dst_ip)
-
- # Verify route (ICMP echo/reply)
- ipv6_ping(src_if, dst_if, src_mac, dst_mac, proxy_to_src_mac,
- proxy_to_dst_mac, src_ip, dst_ip)
-
-
-if __name__ == "__main__":
- main()
Code Review / csit.git / blobdiff