from scapy.layers.dhcp6 import DHCP6_Advertise, DHCP6OptClientId, \
DHCP6OptStatusCode, DHCP6OptPref, DHCP6OptIA_PD, DHCP6OptIAPrefix, \
DHCP6OptServerId, DHCP6_Solicit, DHCP6_Reply, DHCP6_Request, DHCP6_Renew, \
- DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime
+ DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime, DHCP6OptIA_NA, \
+ DHCP6OptIAAddress
from scapy.layers.inet6 import IPv6, Ether, UDP
from scapy.utils6 import in6_mactoifaceid
from scapy.utils import inet_ntop, inet_pton
from socket import AF_INET6
from framework import VppTestCase
-from time import time
def ip6_normalize(ip6):
return addr
-class TestDHCPv6PD(VppTestCase):
- """ DHCPv6 PD Data Plane Test Case """
+class TestDHCPv6DataPlane(VppTestCase):
+ """ DHCPv6 Data Plane Test Case """
@classmethod
def setUpClass(cls):
- super(TestDHCPv6PD, cls).setUpClass()
+ super(TestDHCPv6DataPlane, cls).setUpClass()
def setUp(self):
- super(TestDHCPv6PD, self).setUp()
+ super(TestDHCPv6DataPlane, self).setUp()
self.create_pg_interfaces(range(1))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.unconfig_ip6()
i.admin_down()
- super(TestDHCPv6PD, self).tearDown()
+ super(TestDHCPv6DataPlane, self).tearDown()
- def test_dhcp_send_solicit_receive_advertise(self):
- """ Verify DHCPv6 PD Solicit packet and received Advertise envent """
+ def test_dhcp_ia_na_send_solicit_receive_advertise(self):
+ """ Verify DHCPv6 IA NA Solicit packet and Advertise envent """
+
+ self.vapi.dhcp6_clients_enable_disable()
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ address_bin = '\00\01\00\02\00\03' + '\00' * 8 + '\00\05'
+ address = {'address': address_bin,
+ 'preferred_time': 60,
+ 'valid_time': 120}
+ self.vapi.dhcp6_send_client_message(1, self.pg0.sw_if_index,
+ T1=20, T2=40, addresses=[address])
+ rx_list = self.pg0.get_capture(1)
+ self.assertEqual(len(rx_list), 1)
+ packet = rx_list[0]
+
+ self.assertTrue(packet.haslayer(IPv6))
+ self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
+
+ client_duid = packet[DHCP6OptClientId].duid
+ trid = packet[DHCP6_Solicit].trid
+
+ dst = ip6_normalize(packet[IPv6].dst)
+ dst2 = ip6_normalize("ff02::1:2")
+ self.assert_equal(dst, dst2)
+ src = ip6_normalize(packet[IPv6].src)
+ src2 = ip6_normalize(self.pg0.local_ip6_ll)
+ self.assert_equal(src, src2)
+ ia_na = packet[DHCP6OptIA_NA]
+ self.assert_equal(ia_na.T1, 20)
+ self.assert_equal(ia_na.T2, 40)
+ self.assert_equal(len(ia_na.ianaopts), 1)
+ address = ia_na.ianaopts[0]
+ self.assert_equal(address.addr, '1:2:3::5')
+ self.assert_equal(address.preflft, 60)
+ self.assert_equal(address.validlft, 120)
+
+ self.vapi.want_dhcp6_reply_events()
+
+ try:
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=60,
+ validlft=120)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=mk_ll_addr(self.pg0.remote_mac),
+ dst=self.pg0.local_ip6_ll) /
+ UDP(sport=547, dport=546) /
+ DHCP6_Advertise(trid=trid) /
+ DHCP6OptServerId(duid=self.server_duid) /
+ DHCP6OptClientId(duid=client_duid) /
+ DHCP6OptPref(prefval=7) /
+ DHCP6OptStatusCode(statuscode=1) /
+ DHCP6OptIA_NA(iaid=1, T1=20, T2=40, ianaopts=ia_na_opts)
+ )
+ self.pg0.add_stream([p])
+ self.pg_start()
+
+ ev = self.vapi.wait_for_event(1, "dhcp6_reply_event")
+
+ self.assert_equal(ev.preference, 7)
+ self.assert_equal(ev.status_code, 1)
+ self.assert_equal(ev.T1, 20)
+ self.assert_equal(ev.T2, 40)
+
+ reported_address = ev.addresses[0]
+ address = inet_pton(AF_INET6, ia_na_opts.getfieldval("addr"))
+ self.assert_equal(reported_address.address, address)
+ self.assert_equal(reported_address.preferred_time,
+ ia_na_opts.getfieldval("preflft"))
+ self.assert_equal(reported_address.valid_time,
+ ia_na_opts.getfieldval("validlft"))
+
+ finally:
+ self.vapi.want_dhcp6_reply_events(enable_disable=0)
+
+ def test_dhcp_pd_send_solicit_receive_advertise(self):
+ """ Verify DHCPv6 PD Solicit packet and Advertise envent """
self.vapi.dhcp6_clients_enable_disable()
self.vapi.want_dhcp6_pd_reply_events()
- ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
- validlft=120)
+ try:
+ ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
+ validlft=120)
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IPv6(src=mk_ll_addr(self.pg0.remote_mac),
+ dst=self.pg0.local_ip6_ll) /
+ UDP(sport=547, dport=546) /
+ DHCP6_Advertise(trid=trid) /
+ DHCP6OptServerId(duid=self.server_duid) /
+ DHCP6OptClientId(duid=client_duid) /
+ DHCP6OptPref(prefval=7) /
+ DHCP6OptStatusCode(statuscode=1) /
+ DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
+ )
+ self.pg0.add_stream([p])
+ self.pg_start()
+
+ ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
+
+ self.assert_equal(ev.preference, 7)
+ self.assert_equal(ev.status_code, 1)
+ self.assert_equal(ev.T1, 20)
+ self.assert_equal(ev.T2, 40)
+
+ reported_prefix = ev.prefixes[0]
+ prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
+ self.assert_equal(reported_prefix.prefix, prefix)
+ self.assert_equal(reported_prefix.prefix_length,
+ ia_pd_opts.getfieldval("plen"))
+ self.assert_equal(reported_prefix.preferred_time,
+ ia_pd_opts.getfieldval("preflft"))
+ self.assert_equal(reported_prefix.valid_time,
+ ia_pd_opts.getfieldval("validlft"))
+
+ finally:
+ self.vapi.want_dhcp6_pd_reply_events(enable_disable=0)
+
+
+class TestDHCPv6IANAControlPlane(VppTestCase):
+ """ DHCPv6 IA NA Control Plane Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestDHCPv6IANAControlPlane, cls).setUpClass()
+
+ def setUp(self):
+ super(TestDHCPv6IANAControlPlane, self).setUp()
+
+ self.create_pg_interfaces(range(1))
+ self.interfaces = list(self.pg_interfaces)
+ for i in self.interfaces:
+ i.admin_up()
+
+ self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
+ self.client_duid = None
+ self.T1 = 1
+ self.T2 = 2
+
+ fib = self.vapi.ip6_fib_dump()
+ self.initial_addresses = set(self.get_interface_addresses(fib,
+ self.pg0))
+
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.vapi.dhcp6_client_enable_disable(self.pg0.sw_if_index)
+
+ def tearDown(self):
+ self.vapi.dhcp6_client_enable_disable(self.pg0.sw_if_index, enable=0)
+
+ for i in self.interfaces:
+ i.admin_down()
+
+ super(TestDHCPv6IANAControlPlane, self).tearDown()
+
+ @staticmethod
+ def get_interface_addresses(fib, pg):
+ lst = []
+ for entry in fib:
+ if entry.address_length == 128:
+ path = entry.path[0]
+ if path.sw_if_index == pg.sw_if_index:
+ lst.append(entry.address)
+ return lst
+
+ def get_addresses(self):
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ return addresses.difference(self.initial_addresses)
+
+ def validate_duid_ll(self, duid):
+ DUID_LL(duid)
+
+ def validate_packet(self, packet, msg_type, is_resend=False):
+ try:
+ self.assertTrue(packet.haslayer(msg_type))
+ client_duid = packet[DHCP6OptClientId].duid
+ if self.client_duid is None:
+ self.client_duid = client_duid
+ self.validate_duid_ll(client_duid)
+ else:
+ self.assertEqual(self.client_duid, client_duid)
+ if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
+ server_duid = packet[DHCP6OptServerId].duid
+ self.assertEqual(server_duid, self.server_duid)
+ if is_resend:
+ self.assertEqual(self.trid, packet[msg_type].trid)
+ else:
+ self.trid = packet[msg_type].trid
+ ip = packet[IPv6]
+ udp = packet[UDP]
+ self.assertEqual(ip.dst, 'ff02::1:2')
+ self.assertEqual(udp.sport, 546)
+ self.assertEqual(udp.dport, 547)
+ dhcpv6 = packet[msg_type]
+ elapsed_time = dhcpv6[DHCP6OptElapsedTime]
+ if (is_resend):
+ self.assertNotEqual(elapsed_time.elapsedtime, 0)
+ else:
+ self.assertEqual(elapsed_time.elapsedtime, 0)
+ except:
+ packet.show()
+ raise
+
+ def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
+ if timeout is None:
+ timeout = 3
+ rx_list = self.pg0.get_capture(1, timeout=timeout)
+ packet = rx_list[0]
+ self.validate_packet(packet, msg_type, is_resend=is_resend)
+
+ def wait_for_solicit(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
+
+ def wait_for_request(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
+
+ def wait_for_renew(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
+
+ def wait_for_rebind(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
+
+ def wait_for_release(self, timeout=None, is_resend=False):
+ self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
+
+ def send_packet(self, msg_type, t1=None, t2=None, ianaopts=None):
+ if t1 is None:
+ t1 = self.T1
+ if t2 is None:
+ t2 = self.T2
+ if ianaopts is None:
+ opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2)
+ else:
+ opt_ia_na = DHCP6OptIA_NA(iaid=1, T1=t1, T2=t2, ianaopts=ianaopts)
p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
IPv6(src=mk_ll_addr(self.pg0.remote_mac),
dst=self.pg0.local_ip6_ll) /
UDP(sport=547, dport=546) /
- DHCP6_Advertise(trid=trid) /
+ msg_type(trid=self.trid) /
DHCP6OptServerId(duid=self.server_duid) /
- DHCP6OptClientId(duid=client_duid) /
- DHCP6OptPref(prefval=7) /
- DHCP6OptStatusCode(statuscode=1) /
- DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
+ DHCP6OptClientId(duid=self.client_duid) /
+ opt_ia_na
)
self.pg0.add_stream([p])
+ self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
+ def send_advertise(self, t1=None, t2=None, ianaopts=None):
+ self.send_packet(DHCP6_Advertise, t1, t2, ianaopts)
+
+ def send_reply(self, t1=None, t2=None, ianaopts=None):
+ self.send_packet(DHCP6_Reply, t1, t2, ianaopts)
+
+ def test_T1_and_T2_timeouts(self):
+ """ Test T1 and T2 timeouts """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ self.send_reply()
+
+ self.sleep(1)
+
+ self.wait_for_renew()
+
+ self.pg_enable_capture(self.pg_interfaces)
+
+ self.sleep(1)
+
+ self.wait_for_rebind()
+
+ def test_addresses(self):
+ """ Test handling of addresses """
- self.assert_equal(ev.preference, 7)
- self.assert_equal(ev.status_code, 1)
- self.assert_equal(ev.T1, 20)
- self.assert_equal(ev.T2, 40)
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=1,
+ validlft=2)
- reported_prefix = ev.prefixes[0]
- prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
- self.assert_equal(reported_prefix.prefix, prefix)
- self.assert_equal(reported_prefix.prefix_length,
- ia_pd_opts.getfieldval("plen"))
- self.assert_equal(reported_prefix.preferred_time,
- ia_pd_opts.getfieldval("preflft"))
- self.assert_equal(reported_prefix.valid_time,
- ia_pd_opts.getfieldval("validlft"))
+ self.wait_for_solicit()
+ self.send_advertise(t1=20, t2=40, ianaopts=ia_na_opts)
+ self.wait_for_request()
+ self.send_reply(t1=20, t2=40, ianaopts=ia_na_opts)
+ self.sleep(0.1)
+
+ # check FIB for new address
+ new_addresses = self.get_addresses()
+ self.assertEqual(len(new_addresses), 1)
+ addr = list(new_addresses)[0]
+ self.assertEqual(inet_ntop(AF_INET6, addr), '7:8::2')
+
+ self.sleep(2)
+
+ # check that the address is deleted
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
+
+ def test_sending_client_messages_solicit(self):
+ """ VPP receives messages from DHCPv6 client """
+
+ self.wait_for_solicit()
+ self.send_packet(DHCP6_Solicit)
+ self.send_packet(DHCP6_Request)
+ self.send_packet(DHCP6_Renew)
+ self.send_packet(DHCP6_Rebind)
+ self.sleep(1)
+ self.wait_for_solicit(is_resend=True)
+
+ def test_sending_inappropriate_packets(self):
+ """ Server sends messages with inappropriate message types """
+
+ self.wait_for_solicit()
+ self.send_reply()
+ self.wait_for_solicit(is_resend=True)
+ self.send_advertise()
+ self.wait_for_request()
+ self.send_advertise()
+ self.wait_for_request(is_resend=True)
+ self.send_reply()
+ self.wait_for_renew()
+
+ def test_no_address_available_in_advertise(self):
+ """ Advertise message contains NoAddrsAvail status code """
+
+ self.wait_for_solicit()
+ noavail = DHCP6OptStatusCode(statuscode=2) # NoAddrsAvail
+ self.send_advertise(ianaopts=noavail)
+ self.wait_for_solicit(is_resend=True)
+
+ def test_preferred_greater_than_valit_lifetime(self):
+ """ Preferred lifetime is greater than valid lifetime """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=3)
+ self.send_reply(ianaopts=ia_na_opts)
+
+ self.sleep(0.5)
+
+ # check FIB contains no addresses
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
+
+ def test_T1_greater_than_T2(self):
+ """ T1 is greater than T2 """
+
+ self.wait_for_solicit()
+ self.send_advertise()
+ self.wait_for_request()
+ ia_na_opts = DHCP6OptIAAddress(addr='7:8::2', preflft=4, validlft=8)
+ self.send_reply(t1=80, t2=40, ianaopts=ia_na_opts)
+
+ self.sleep(0.5)
+
+ # check FIB contains no addresses
+ fib = self.vapi.ip6_fib_dump()
+ addresses = set(self.get_interface_addresses(fib, self.pg0))
+ new_addresses = addresses.difference(self.initial_addresses)
+ self.assertEqual(len(new_addresses), 0)
class TestDHCPv6PDControlPlane(VppTestCase):
def test_prefixes(self):
""" Test handling of prefixes """
+
address_bin_1 = None
address_bin_2 = None
try:
self.sleep(1)
self.wait_for_solicit(is_resend=True)
- def test_sending_inapropriate_packets(self):
- """ Server sends messages with inapropriate message types """
+ def test_sending_inappropriate_packets(self):
+ """ Server sends messages with inappropriate message types """
self.wait_for_solicit()
self.send_reply()
Code Review / vpp.git / blobdiff