def validate_dhcp_forwarding(self, source_fixture,
dest_fixture, source_interface=None):
'''
Validate that dhcp discover packet from a VM/BMS
is seen on the destination VM/BMS
Returns True in such a case, else False
'''
(session, pcap) = dest_fixture.start_tcpdump(filters='udp port 68 -v')
source_fixture.run_dhclient(source_interface, timeout=20)
time.sleep(5)
dest_fixture.stop_tcpdump(session, pcap)
if isinstance(source_fixture, HostEndpointFixture):
source_mac = source_fixture.info['hwaddr']
source_name = source_fixture.identifier
elif isinstance(source_fixture, VMFixture):
source_mac = source_fixture.get_vm_interface_name(source_interface)
source_name = source_fixture.vm_name
if isinstance(dest_fixture, HostEndpointFixture):
dest_name = dest_fixture.identifier
elif isinstance(dest_fixture, VMFixture):
dest_name = dest_fixture.vm_name
result = search_in_pcap(session, pcap, 'BOOTP/DHCP, Request from %s' % (
source_mac))
if result :
message = 'DHCP discover/request from %s, MAC %s is seen '\
'on %s' % (source_name, source_mac, dest_name)
else:
message = 'DHCP discover/request from %s, MAC %s is NOT '\
'seen on %s' % (source_name, source_mac, dest_name)
self.logger.info(message)
delete_pcap(session, pcap)
return (result, message)
def validate_arp_forwarding(self, source_fixture,
ip, dest_fixture, source_interface=None):
'''
Validate that arp packet from a VM/BMS destined to 'ip'
is seen on the destination VM/BMS
Returns True in such a case, else False
'''
(session, pcap) = dest_fixture.start_tcpdump(filters='arp -v')
source_fixture.arping(ip, source_interface)
time.sleep(5)
dest_fixture.stop_tcpdump(session, pcap)
if isinstance(source_fixture, HostEndpointFixture):
source_ip = source_fixture.info['inet_addr']
elif isinstance(source_fixture, VMFixture):
source_ip = source_fixture.vm_ips[0]
if isinstance(dest_fixture, HostEndpointFixture):
dest_name = dest_fixture.identifier
elif isinstance(dest_fixture, VMFixture):
dest_name = dest_fixture.vm_name
result = search_in_pcap(session, pcap, 'Request who-has %s tell %s' % (
ip, source_ip))
if result :
message = 'ARP request from %s to %s is seen on %s' % (
source_ip, ip, dest_name)
else:
message = 'ARP request from %s to %s is NOT seen on %s' % (
source_ip, ip, dest_name)
self.logger.info(message)
delete_pcap(session, pcap)
return (result, message)